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A123880 Inverse of number triangle A123878. +0
2
1, 0, 1, 1, 0, 1, 1, 3, 0, 1, 5, 3, 5, 0, 1, 11, 18, 5, 7, 0, 1, 41, 39, 35, 7, 9, 0, 1, 120, 157, 75, 56, 9, 11, 0, 1, 421, 459, 325, 119, 81, 11, 13, 0, 1, 1381, 1668, 950, 553, 171, 110, 13, 15, 0, 1, 4840 (list; table; graph; listen)
OFFSET

0,8

COMMENT

First column is A055113. Row sums are A000108.

EXAMPLE

Number triangle begins

1,

0, 1,

1, 0, 1,

1, 3, 0, 1,

5, 3, 5, 0, 1,

11, 18, 5, 7, 0, 1,

41, 39, 35, 7, 9, 0, 1,

120, 157, 75, 56, 9, 11, 0, 1

CROSSREFS

Sequence in context: A115714 A020768 A104544 this_sequence A143626 A034261 A046778

Adjacent sequences: A123877 A123878 A123879 this_sequence A123881 A123882 A123883

KEYWORD

nonn,tabl

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Oct 16 2006

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.


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