The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A319726 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
newer changes | Showing entries 11-18

A319726

Write n in 9-ary, sort digits into decreasing order.
(history; published version)

#8 by Michel Marcus at Wed Sep 26 09:50:04 EDT 2018

STATUS

editing

proposed

#7 by Michel Marcus at Wed Sep 26 09:50:01 EDT 2018

PROG

(PARI) a(n) = fromdigits(vecsort(digits(n, 9), , 4), 9); \\ Michel Marcus, Sep 26 2018

STATUS

proposed

editing

#6 by Seiichi Manyama at Wed Sep 26 06:55:05 EDT 2018

STATUS

editing

proposed

#5 by Seiichi Manyama at Wed Sep 26 06:50:52 EDT 2018

PROG

(Ruby)

def A(k, n)

(0..n).map{|i| i.to_s(k).split('').sort.reverse.join.to_i(k)}

end

p A(9, 100)

#4 by Seiichi Manyama at Wed Sep 26 06:47:59 EDT 2018

CROSSREFS

b-ary: A073138 (b=2), A319651 (b=3), A319720 (b=4), A319722 (b=5), A319723 (b=6), A319724 (b=7), A319725 (b=8), this sequence (b=9), A004186 (b=10).

Cf. A165110, A319657.

#3 by Seiichi Manyama at Wed Sep 26 06:47:02 EDT 2018

KEYWORD

nonn,changed,base

#2 by Seiichi Manyama at Wed Sep 26 06:38:31 EDT 2018

NAME

allocated for Seiichi ManyamaWrite n in 9-ary, sort digits into decreasing order.

DATA

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 19, 28, 37, 46, 55, 64, 73, 18, 19, 20, 29, 38, 47, 56, 65, 74, 27, 28, 29, 30, 39, 48, 57, 66, 75, 36, 37, 38, 39, 40, 49, 58, 67, 76, 45, 46, 47, 48, 49, 50, 59, 68, 77, 54, 55, 56, 57, 58, 59, 60, 69, 78, 63, 64, 65, 66, 67, 68, 69

OFFSET

0,3

KEYWORD

allocated

nonn

AUTHOR

Seiichi Manyama, Sep 26 2018

STATUS

approved

editing

#1 by Seiichi Manyama at Wed Sep 26 06:38:31 EDT 2018

NAME

allocated for Seiichi Manyama

KEYWORD

allocated

STATUS

approved