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Search: id:A056197
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| 1, 7, 38, 222, 1464, 10920, 91440, 851760, 8749440, 98340480, 1201132800, 15846969600, 224651750400, 3406180377600, 55009501747200, 942833219328000, 17093919338496000, 326876746420224000, 6575237795782656000
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OFFSET
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0,2
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FORMULA
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a(n)=(3n^2+3n+1)n!=((n+1)^3-n^3)n!=n!A003215(n). - Paul Barry (pbarry(AT)wit.ie), Apr 02 2003
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MATHEMATICA
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Table[(3n(n+1)+1)n!, {n, 0, 18}]
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CROSSREFS
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Sequence in context: A099461 A104553 A027241 this_sequence A027482 A128554 A032207
Adjacent sequences: A056194 A056195 A056196 this_sequence A056198 A056199 A056200
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KEYWORD
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nonn,easy
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AUTHOR
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njas, Aug 05 2000
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EXTENSIONS
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More terms from Wouter Meeussen (wouter.meeussen(AT)pandora.be), Aug 05 2000
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