A216417 - OEIS

A216417

Numbers of the form p^2*q^3 where p, q are (not necessarily distinct) primes.

32, 72, 108, 200, 243, 392, 500, 675, 968, 1125, 1323, 1352, 1372, 2312, 2888, 3087, 3125, 3267, 4232, 4563, 5324, 6125, 6728, 7688, 7803, 8575, 8788, 9747, 10952, 11979, 13448, 14283, 14792, 15125, 16807, 17672, 19652, 19773, 21125, 22472, 22707, 25947, 27436, 27848, 29768

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

With[{nn=50}, Take[Union[First[#]^2 Last[#]^3&/@ Tuples[ Prime[ Range[ nn]], 2]], nn]] (* Harvey P. Dale, Jan 17 2014 *)

CROSSREFS

Union of A143610 (where p != q) and A050997 (where p = q).

Sequence in context: A250755 A216427 A104026 * A110230 A250756 A303583

Adjacent sequences: A216414 A216415 A216416 * A216418 A216419 A216420

KEYWORD

nonn

AUTHOR

V. Raman, Sep 07 2012

STATUS

approved