A185548 a(n) = floor(floor(n^(5/2))^(2/3)).

1, 2, 6, 10, 14, 19, 25, 31, 38, 46, 54, 62, 71, 81, 91, 101, 112, 123, 135, 147, 159, 172, 185, 199, 213, 228, 242, 258, 273, 289, 305, 322, 339, 356, 374, 392, 410, 429, 448, 467, 487, 507, 527, 548, 569, 590, 612, 633, 656, 678, 701, 724, 747, 771, 795, 819, 844, 869, 894

Offset

1,2

Links

G. C. Greubel, Table of n, a(n) for n = 1..5000

Formula

a(n) = floor(floor(n^(5/2))^(2/3)).

Mathematica

f[n_]=Floor[Floor[n^(5/2)]^(2/3)];
t1=Table[f[n], {n, 1, 90}]; t1

Prog

(PARI) for(n=1, 50, print1(floor(floor(n^(5/2))^(2/3)), ", ")) \\ G. C. Greubel, Jul 08 2017
(PARI) a(n) = sqrtnint(sqrtnint(n^5, 2)^2, 3); \\ Michel Marcus, Jul 08 2017

Crossrefs

Sequence in context: A190883 A284678 A367367 * A351553 A354715 A239221

Adjacent sequences: A185545 A185546 A185547 * A185549 A185550 A185551

Keyword

nonn

Author

Clark Kimberling, Jan 30 2011

Status

approved