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1, 6, 23, 74, 216, 592, 1552, 3936, 9728, 23552, 56064, 131584, 305152, 700416, 1593344, 3596288, 8060928, 17956864, 39780352, 87687168, 192413696, 420478976, 915406848, 1986002944, 4294967296, 9261023232, 19914555392, 42714791936
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Double binomial transform of [1, 4, 3, 0, 0, 0,...].
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FORMULA
| Binomial transform of the Pentagonal numbers, (A000326 starting 1, 5, 12, 22,...).
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EXAMPLE
| a(3) = 23 = (1, 2, 1) dot (1, 5, 12), = (1 + 10 + 12).
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CROSSREFS
| Cf. A000326.
Sequence in context: A045618 A038737 A038797 * A054459 A060188 A058751
Adjacent sequences: A136527 A136528 A136529 * A136531 A136532 A136533
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KEYWORD
| nonn
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 03 2008
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EXTENSIONS
| More terms from Carl Najafi (carlnajafi(AT)gmail.com), Sep 08 2011
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