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1, 12, 68, 264, 810, 2112, 4884, 10296, 20163, 37180, 65208, 109616, 177684, 279072, 426360, 635664, 927333, 1326732, 1865116, 2580600, 3519230, 4736160, 6296940, 8278920, 10772775, 13884156, 17735472, 22467808, 28242984, 35245760
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196.
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FORMULA
| a(n)=C(n+6, 6)*(5n+7)/7.
G.f.: (1+4*x)/(1-x)^8.
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CROSSREFS
| Cf. A051946.
Cf. A093562 ((5, 1) Pascal, column m=7).
Sequence in context: A200204 A200205 A059585 * A096425 A101097 A067702
Adjacent sequences: A050481 A050482 A050483 * A050485 A050486 A050487
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KEYWORD
| easy,nonn
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AUTHOR
| Barry E. Williams, Dec 26 1999
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EXTENSIONS
| More terms from Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Jun 17 2001
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