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1, 4, 1, 4, 8, 1, 4, 12, 12, 1, 4, 16, 24, 16, 1, 4, 20, 40, 40, 20, 1, 4, 24, 60, 80, 60, 24, 1, 4, 28, 84, 140, 140, 84, 28, 1, 4, 32, 112, 224, 280, 224, 112, 32, 1, 4, 36, 144, 336, 504, 504, 336, 144, 36, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Row sums = A036563 starting (1, 5, 13, 29, 61, 125, 253,...)
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FORMULA
| 4*A007318 - 3*I; A007318 = Pascal's triangle, I = Identity matrix.
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EXAMPLE
| First few rows of the triangle are:
1;
4, 1;
4, 8, 1;
4, 12, 12, 1;
4, 16, 24, 16, 1;
4, 20, 40, 40, 20, 1;
...
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CROSSREFS
| Cf. A131110, A131111, A131113, A131114, A131115, A036563, A007318.
Sequence in context: A051006 A072812 A162956 * A141225 A079185 A133819
Adjacent sequences: A131109 A131110 A131111 * A131113 A131114 A131115
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 15 2007
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