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A194150
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a(n) = Sum_{j=1..n} floor(j*(3+sqrt(5))); n-th partial sum of Beatty sequence for 3+sqrt(5).
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0
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5, 15, 30, 50, 76, 107, 143, 184, 231, 283, 340, 402, 470, 543, 621, 704, 793, 887, 986, 1090, 1199, 1314, 1434, 1559, 1689, 1825, 1966, 2112, 2263, 2420, 2582, 2749, 2921, 3099, 3282, 3470, 3663, 3861, 4065, 4274, 4488, 4707, 4932, 5162, 5397
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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c[n_] := Sum[Floor[j*(3+Sqrt[5])], {j, 1, n}];
c = Table[c[n], {n, 1, 90}]
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CROSSREFS
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Cf. A001962 (Beatty sequence for 3+sqrt(5)).
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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