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A131923 A002024 + A007318 - A000012. 1
1, 2, 2, 3, 4, 3, 4, 6, 6, 4, 5, 8, 10, 8, 5, 6, 10, 15, 15, 10, 6, 7, 12, 21, 26, 21, 12, 7, 8, 14, 28, 42, 42, 28, 14, 8, 9, 16, 36, 64, 78, 64, 36, 9, 10, 18, 45, 93, 135, 135, 93, 45, 18, 10 (list; table; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Row sums = A131924: (1, 4, 10, 20, 36, 62, 106, 184,...).

FORMULA

A002024 - A007318 - A000012 as infinite lower triangular matrices. A002024 = (1; 2,2; 3,3,3;...); A007318 = Pascal's triangle and A000012 = (1; 1,1; 1,1,1;...).

t(n,m)=binomial[n, m] + n. - Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jul 30 2008

EXAMPLE

First few rows of the triangle are:

1;

2, 2;

3, 4, 3;

4, 6, 6, 4;

5, 8, 10, 8, 5;

6, 10, 15, 15, 10, 6;

7, 12, 21, 26, 21, 12, 7;

8, 14, 28, 42, 42, 28, 14, 8;

9, 16, 36, 64, 78, 64, 36, 16, 9;

10, 18, 45, 93, 135, 135, 93, 45, 18, 10;

...

MATHEMATICA

T[n_, m_] = Binomial[n, m] + n; Table[Table[T[n, m], {m, 0, n}], {n, 0, 10}]; Flatten[%] - Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jul 30 2008

CROSSREFS

Cf. A002024, A007318, A000012, A131924.

Cf. A003991.

Sequence in context: A205153 A091257 A003991 * A119457 A065157 A051597

Adjacent sequences:  A131920 A131921 A131922 * A131924 A131925 A131926

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 29 2007

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Last modified February 17 12:38 EST 2012. Contains 206021 sequences.