login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A216417 Numbers of the form p^2*q^3 where p, q are (not necessarily distinct) primes. 0
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 (list; graph; refs; listen; history; text; internal format)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 19 08:05 EDT 2021. Contains 347556 sequences. (Running on oeis4.)