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A131060
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3*A007318 - 2*A000012 as infinite lower triangular matrices.
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9
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1, 1, 1, 1, 4, 1, 1, 7, 7, 1, 1, 10, 16, 10, 1, 1, 13, 28, 28, 13, 1, 1, 16, 43, 58, 43, 16, 1, 1, 19, 61, 103, 103, 61, 19, 1, 1, 22, 82, 166, 208, 166, 82, 22, 1, 1, 25, 106, 250, 376, 376, 250, 106, 25, 1, 1, 28, 133, 358, 628, 754, 628, 358, 133, 28, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,5
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COMMENTS
| Row sums = A097813: (1, 2, 6, 16, 38, 84, 178,...).
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FORMULA
| T(n,m)=3*Binomial(n,m)-2. - Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Aug 20 2008
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EXAMPLE
| First few rows of the triangle are:
1;
1, 1;
1, 4, 1;
1, 7, 7, 1;
1, 10, 16, 10, 1;
1, 13, 28, 28, 13, 1;
1, 16, 43, 58, 43, 16, 1;
...
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MATHEMATICA
| t[n_, m_] = 3*Binomial[n, m] - 2; Table[Table[t[n, m], {m, 0, n}], {n, 0, 10}]; Flatten[%] - Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Aug 20 2008
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CROSSREFS
| Cf. A109128, A131061, A131062, A131063, A131064, A131065, A131066.
Cf. A109128.
Sequence in context: A146880 A152236 A157172 * A124376 A047671 A081577
Adjacent sequences: A131057 A131058 A131059 * A131061 A131062 A131063
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 13 2007
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EXTENSIONS
| More terms from Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Aug 20 2008
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