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A136489 3*A007318 - 2*A034851 (i.e., thrice Pascal's triangle - twice Losanitch's triangle). 1
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; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

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

LINKS

Table of n, a(n) for n=0..54.

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.

Sequence in context: A146770 A143334 A156050 * A166455 A171142 A174037

Adjacent sequences:  A136486 A136487 A136488 * A136490 A136491 A136492

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jan 01 2008

STATUS

approved

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Last modified June 19 05:16 EDT 2019. Contains 324217 sequences. (Running on oeis4.)