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Search: id:A135095
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| A135095 |
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a(1)=1, a(n)=a(n-1)+n^5 if n odd, a(n)=a(n-1)+ n^2 if n is even. |
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+0
2
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| 1, 5, 248, 264, 3389, 3425, 20232, 20296, 79345, 79445, 240496, 240640, 611933, 612129, 1371504, 1371760, 2791617, 2791941, 5268040, 5268440, 9352541, 9353025, 15789368, 15789944, 25555569, 25556245, 39905152, 39905936, 60417085
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OFFSET
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1,2
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MATHEMATICA
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a = {}; r = 5; s = 2; Do[k = 0; Do[k = k + (Sin[Pi m/2]^2) m^r + (Cos[Pi m/2]^2) m^s, {m, 1, n}]; AppendTo[a, k], {n, 1, 100}]; a (*Artur Jasinski*)
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CROSSREFS
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Cf. A000027, A000217, A000330, A000537, A000538, A000539, A136047, A140113.
Adjacent sequences: A135092 A135093 A135094 this_sequence A135096 A135097 A135098
Sequence in context: A097323 A125533 A068727 this_sequence A115739 A142202 A042219
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KEYWORD
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nonn
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AUTHOR
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Jasinski Artur (grafix(AT)csl.pl), May 12 2008
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