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A136489 3*A007318 - 2*A034851 (i.e. thrice Pascal's triangle - twice the Losanitch triangle). +0
2
1, 1, 1, 1, 4, 1, 1, 5, 5, 1, 1, 8, 10, 8, 1, 1, 9, 18, 18, 9, 1, 1, 12, 27, 40, 27, 12, 1, 1, 13, 39, 67, 67, 39, 13, 1, 1, 16, 52, 112, 134, 112, 52, 16, 1, 1, 17, 68, 164, 246, 246, 164, 68, 17, 1 (list; table; graph; listen)
OFFSET

0,5

COMMENT

Row sums = A122746: (1, 2, 6, 12, 28, 56, 120, 240, 496,...)

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

1, 4, 1;

1, 5, 5, 1;

1, 8, 10, 8, 1;

1, 9, 18, 18, 9, 1;

1, 12, 27, 40, 27, 12, 1;

1, 13, 39, 67, 67, 39, 13, 1;

1, 16, 52, 112, 134, 112, 52, 16, 1;

1, 17, 68, 164, 246, 246, 164, 68, 17, 1;

...

CROSSREFS

Cf. A034851, A122746.

Adjacent sequences: A136486 A136487 A136488 this_sequence A136490 A136491 A136492

Sequence in context: A147566 A146770 A143334 this_sequence A131239 A114033 A084061

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 01 2008

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Last modified January 7 17:35 EST 2009. Contains 152824 sequences.


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