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A321070 Squares divisible by more than one cube > 1. 2
64, 256, 576, 729, 1024, 1296, 1600, 2304, 2916, 3136, 4096, 5184, 6400, 6561, 7744, 9216, 10000, 10816, 11664, 12544, 14400, 15625, 16384, 18225, 18496, 20736, 23104, 25600, 26244, 28224, 30976, 32400, 33856, 35721, 36864, 38416, 40000, 43264, 46656, 50176 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Hugo Pfoertner, Table of n, a(n) for n = 1..10000

EXAMPLE

a(1) = 64 because 16^2 is divisible by 2^3 and by 4^3.

PROG

(PARI) iscubes(n) = {my(nb = 0); fordiv(n, d, if ((d>1) && ispower(d, 3), nb++; if (nb > 1, return(1))); ); }

isok(n) = issquare(n) && iscubes(n); \\ Michel Marcus, Oct 27 2018

CROSSREFS

Cf. A000290, A000578, A062320, A216427, A320965.

Sequence in context: A223315 A263924 A236331 * A017066 A141478 A107262

Adjacent sequences:  A321067 A321068 A321069 * A321071 A321072 A321073

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, Oct 27 2018

STATUS

approved

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Last modified January 19 22:12 EST 2022. Contains 350466 sequences. (Running on oeis4.)