A263846 - OEIS

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A263846

Floor of cube root of n-th prime.

1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,5

LINKS

Table of n, a(n) for n=1..113.

FORMULA

a(n) = A048766(A000040(n)). - Michel Marcus, Nov 10 2015

MATHEMATICA

Floor[Surd[#, 3]]&/@Prime[Range[120]] (* Harvey P. Dale, Jun 19 2022 *)

PROG

(PARI) a(n) = sqrtnint(prime(n), 3); \\ Michel Marcus, Nov 10 2015

CROSSREFS