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1, 0, 2, 0, 2, 3, 0, 2, 6, 4, 0, 2, 9, 12, 5, 0, 2, 12, 24, 20, 6, 0, 2, 15, 40, 50, 30, 7, 0, 2, 18, 60, 100, 90, 42, 8, 0, 2, 21, 84, 175, 210, 147, 56, 9, 0, 2, 24, 112, 280, 420, 392, 224, 72, 10
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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COMMENTS
| Row sums = A045623 starting (1, 2, 5, 12, 28, 64,...)
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FORMULA
| A097805 * A127648 as infinite lower triangular matrices.
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EXAMPLE
| First few rows of the triangle are:
1;
0, 2;
0, 2, 3;
0, 2, 6, 4;
0, 2, 9, 12, 5;
0, 2, 12, 24, 20, 6;
0, 2, 15, 40, 50, 30, 7;
...
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CROSSREFS
| Cf. A097805, A127648.
Sequence in context: A067871 A198632 A060155 * A198061 A160706 A087509
Adjacent sequences: A127951 A127952 A127953 * A127955 A127956 A127957
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 09 2007
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