login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A151512 The triangle in A151359 read by rows upwards. 1
1, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 6, 7, 1, 0, 1, 10, 25, 15, 1, 0, 1, 15, 65, 90, 31, 1, 0, 1, 21, 140, 350, 301, 63, 0, 0, 1, 28, 266, 1050, 1701, 966, 119, 0, 0 (list; table; graph; refs; listen; history; internal format)
OFFSET

0,8

LINKS

David Applegate and N. J. A. Sloane, The Gift Exchange Problem (arXiv:0907.0513, 2009)

EXAMPLE

Triangle begins:

1

1 0

1 1 0

1 3 1 0

1 6 7 1 0

1 10 25 15 1 0

1 15 65 90 31 1 0

1 21 140 350 301 63 0 0

1 28 266 1050 1701 966 119 0 0

CROSSREFS

Sequence in context: A085791 A144645 A151510 * A106800 A055807 A205099

Adjacent sequences:  A151509 A151510 A151511 * A151513 A151514 A151515

KEYWORD

nonn,tabl,easy,more

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), May 14 2009

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 14 11:17 EST 2012. Contains 205623 sequences.