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A185548
a(n) = floor(floor(n^(5/2))^(2/3)).
1
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
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
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 30 2011
STATUS
approved