The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A205142 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A205142

s(k)-s(j), where (s(k),s(j)) is the least such pair for which n divides their difference, and s(j)=j(3j-1)/2, the j-th pentagonal number.
(history; published version)

#9 by Alois P. Heinz at Thu Apr 09 16:34:46 EDT 2015

STATUS

reviewed

approved

#8 by Michel Marcus at Thu Apr 09 14:52:22 EDT 2015

STATUS

proposed

reviewed

#7 by Danny Rorabaugh at Thu Apr 09 14:34:14 EDT 2015

STATUS

editing

proposed

#6 by Danny Rorabaugh at Thu Apr 09 14:34:11 EDT 2015

NAME

s(k)-s(j), where (s(k),s(j)) is the least such pair for which n divides their difference, and s(j)=j(3j-1)/2, the jth j-th pentagonal number.

STATUS

approved

editing

#5 by Russ Cox at Fri Mar 30 18:58:10 EDT 2012

AUTHOR

_Clark Kimberling (ck6(AT)evansville.edu), _, Jan 25 2012

Discussion

Fri Mar 30

18:58

OEIS Server: https://oeis.org/edit/global/285

#4 by T. D. Noe at Wed Jan 25 18:22:35 EST 2012

STATUS

proposed

approved

#3 by Clark Kimberling at Wed Jan 25 18:03:35 EST 2012

STATUS

editing

proposed

#2 by Clark Kimberling at Wed Jan 25 14:57:40 EST 2012

NAME

allocated s(k)-s(j), where (s(k),s(j)) is the least such pair for Clark Kimberlingwhich n divides their difference, and s(j)=j(3j-1)/2, the jth pentagonal number.

DATA

4, 4, 21, 4, 10, 30, 7, 16, 144, 10, 11, 48, 13, 70, 30, 16, 17, 144, 19, 80, 21, 22, 23, 48, 50, 130, 1161, 112, 29, 30, 31, 64, 66, 34, 35, 144, 37, 190, 39, 80, 41, 84, 43, 308, 225, 46, 47, 48, 196, 50, 102, 260, 53, 1242, 110, 112, 57, 58, 59, 120

OFFSET

1,1

COMMENTS

For a guide to related sequences, see A204892.

MATHEMATICA

(See the program at A205138.)

CROSSREFS

Cf. A205138, A204892.

KEYWORD

allocated

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu), Jan 25 2012

STATUS

approved

editing

#1 by Clark Kimberling at Sun Jan 22 10:30:44 EST 2012

NAME

allocated for Clark Kimberling

KEYWORD

allocated

STATUS

approved