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Search: id:A050405
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| 1, 15, 84, 308, 882, 2142, 4620, 9108, 16731, 29029, 48048, 76440, 117572, 175644, 255816, 364344, 508725, 697851, 942172, 1253868, 1647030, 2137850, 2744820, 3488940, 4393935, 5486481, 6796440, 8357104
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OFFSET
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0,2
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REFERENCES
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A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196.
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FORMULA
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a(n)=C(n+5, 5)*(3n+2)/2.
G.f.: (1+8*x)/(1-x)^7.
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CROSSREFS
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Cf. A051879.
Cf. A093644 ((9, 1) Pascal, column m=6).
Sequence in context: A060581 A065103 A108674 this_sequence A020136 A067401 A091286
Adjacent sequences: A050402 A050403 A050404 this_sequence A050406 A050407 A050408
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KEYWORD
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easy,nonn
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AUTHOR
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Barry E. Williams, Dec 21 1999
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EXTENSIONS
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Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 09 2006
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