A056180 Sum of a(n) terms of 1/k^(4/5) first exceeds n.

1, 2, 4, 7, 14, 24, 40, 63, 95, 140, 201, 281, 384, 516, 682, 888, 1141, 1449, 1820, 2263, 2789, 3408, 4133, 4976, 5951, 7074, 8360, 9826, 11492, 13376, 15499, 17884, 20554, 23533, 26849, 30528, 34600, 39095, 44045, 49485, 55450, 61976, 69103

Offset: 0

Author

Robert G. Wilson v, Aug 01 2000

Keywords

• nonn

Crossrefs

Cf. A019529 and A002387.

Programs

Mathematica

s = 0; k = 1; Do[ While[ s <= n, s = s + N[ 1/k^(4/5), 24 ]; k++ ]; Print[ k - 1 ], {n, 1, 50} ]
Join[{1},Table[Position[Accumulate[Table[N[1/k^(4/5)],{k,100000}]],?(#>n&),{1},1],{n,50}]//Flatten] (* _Harvey P. Dale, Sep 23 2016 *)