The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A180386 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A180386

Number of increasing sequences of n integers x(1),...,x(n) with values in 1..4*n such that x(j) divides x(k) if j divides k
(history; published version)

#4 by Russ Cox at Sat Mar 31 12:35:46 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Sep 01 2010

Discussion

Sat Mar 31

12:35

OEIS Server: https://oeis.org/edit/global/875

#3 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010

LINKS

R. H. Hardin, <a href="/A180386/b180386.txt">Table of n, a(n) for n=1..38</a>

KEYWORD

nonn,new

nonn

#2 by N. J. A. Sloane at Sat Oct 02 03:00:00 EDT 2010

KEYWORD

nonn,new

nonn

AUTHOR

Ron R. H. Hardin (rhhardin(AT)att.net) Sep 01 2010

#1 by N. J. A. Sloane at Sun Sep 12 03:00:00 EDT 2010

NAME

Number of increasing sequences of n integers x(1),...,x(n) with values in 1..4*n such that x(j) divides x(k) if j divides k

DATA

4, 12, 69, 143, 1051, 1041, 6722, 8485, 15907, 8500, 71585, 72304, 374159, 192093, 132237, 83720, 495591, 405716, 2262354, 2347020, 1676501, 478044, 3315250, 5160917, 5831333, 1762619, 2192192, 1666381, 8506917, 12211917, 58000458

OFFSET

1,1

COMMENTS

Column 4 of A180383

LINKS

R. H. Hardin, <a href="b180386.txt">Table of n, a(n) for n=1..38</a>

KEYWORD

nonn,new

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Sep 01 2010

STATUS

approved