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Search: id:A061316
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| 0, 3, 15, 48, 120, 255, 483, 840, 1368, 2115, 3135, 4488, 6240, 8463, 11235, 14640, 18768, 23715, 29583, 36480, 44520, 53823, 64515, 76728, 90600, 106275, 123903, 143640, 165648, 190095, 217155, 247008, 279840, 315843, 355215, 398160, 444888
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OFFSET
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0,2
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FORMULA
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a(n) =n(n+1)*(n^2+n+4)/4 =A005563(A000217(n)) =3*A006007(n) =A061314(n, 2).
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MAPLE
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a:=n->sum((n+j^3), j=0..n): seq(a(n), n=0..36); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 27 2006
with(combinat):a:=n->sum(fibonacci(4, i), i=0..n): seq(a(n), n=0..36); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 20 2008
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CROSSREFS
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Sequence in context: A110464 A088108 A135622 this_sequence A124161 A089580 A034564
Adjacent sequences: A061313 A061314 A061315 this_sequence A061317 A061318 A061319
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KEYWORD
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nonn
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AUTHOR
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Henry Bottomley (se16(AT)btinternet.com), Apr 24 2001
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