The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A277818 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A277818

Index of the column where n is located in array A277820: a(n) = 1 + A268389(n).
(history; published version)

#10 by N. J. A. Sloane at Sat Nov 05 07:26:02 EDT 2016

STATUS

proposed

approved

#9 by Antti Karttunen at Thu Nov 03 09:06:48 EDT 2016

STATUS

editing

proposed

#8 by Antti Karttunen at Thu Nov 03 07:18:35 EDT 2016

CROSSREFS

Cf. A268671 for the other index, also A277822.

STATUS

proposed

editing

#7 by Antti Karttunen at Wed Nov 02 07:05:51 EDT 2016

STATUS

editing

proposed

#6 by Antti Karttunen at Wed Nov 02 06:49:59 EDT 2016

LINKS

Antti Karttunen, <a href="/A277818/b277818.txt">Table of n, a(n) for n = 1..16384</a>

#5 by Antti Karttunen at Wed Nov 02 06:48:31 EDT 2016

COMMENTS

Ordinal transform of A268671.

#4 by Antti Karttunen at Wed Nov 02 06:44:10 EDT 2016

LINKS

<a href="/index/Ge#GF2X">Index entries for sequences operating on polynomials in ring GF(2)[X]</a>

CROSSREFS

One more than A268389.

Cf. A277820, A268389.

Discussion

Wed Nov 02

06:46

Antti Karttunen: (I mean the nonmonotonicity of the columns of array A277820. Its rows are are strictly increasing however as A048724(k) > k for any k > 0).

#3 by Antti Karttunen at Wed Nov 02 06:41:43 EDT 2016

NAME

Index of the row column where n appears is located in array A277820: a(n) = 1 + A268389(n).

#2 by Antti Karttunen at Wed Nov 02 06:32:48 EDT 2016

NAME

allocated for Antti KarttunenIndex of the row where n appears in array A277820: a(n) = 1 + A268389(n).

DATA

1, 1, 2, 1, 3, 2, 1, 1, 2, 3, 1, 2, 1, 1, 4, 1, 5, 2, 1, 3, 1, 1, 2, 2, 1, 1, 3, 1, 2, 4, 1, 1, 2, 5, 1, 2, 1, 1, 3, 3, 1, 1, 2, 1, 4, 2, 1, 2, 1, 1, 6, 1, 2, 3, 1, 1, 3, 2, 1, 4, 1, 1, 2, 1, 3, 2, 1, 5, 1, 1, 2, 2, 1, 1, 4, 1, 2, 3, 1, 3, 1, 1, 2, 1, 7, 2, 1, 1, 2, 4, 1, 2, 1, 1, 3, 2, 1, 1, 3, 1, 2, 6, 1, 1, 4, 2, 1, 3, 1, 1, 2, 1, 2, 3, 1, 2, 1, 1, 5, 4

OFFSET

1,3

LINKS

<a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a>

FORMULA

a(n) = 1 + A268389(n).

PROG

(Scheme) (define (A277818 n) (+ 1 (A268389 n)))

CROSSREFS

Cf. A277820, A268389.

Cf. A268671 for the other index.

KEYWORD

allocated

nonn,base

AUTHOR

Antti Karttunen, Nov 02 2016

STATUS

approved

editing

Discussion

Wed Nov 02

06:34

Antti Karttunen: Created this because the other index of A277820 is also one-based, and also if somebody does automatic search for pairs of sequences which are ordinal transforms of each other, then this will match with A268671.

06:38

Antti Karttunen: Note, it seems that A277818 is the ordinal transform of A268671, but not vice versa (because of their nonmonotonicity?):
(map A277818 (iota 32)) -->  (1 1 2 1 3 2 1 1 2 3 1 2 1 1 4 1 5 2 1 3 1 1 2 2 1 1 3 1 2 4 1 1)

(map A268671 (iota 32)) --> (1 2 1 4 1 2 3 8 3 2 7 4 5 6 1 16 1 6 15 4 13 14 5 8 9 10 3 12 7 2 11 32)

#1 by Antti Karttunen at Tue Nov 01 06:41:16 EDT 2016

NAME

allocated for Antti Karttunen

KEYWORD

allocated

STATUS

approved