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!)
A062532 Odd nonprimes squared, or A014076(n)^2. 3
1, 81, 225, 441, 625, 729, 1089, 1225, 1521, 2025, 2401, 2601, 3025, 3249, 3969, 4225, 4761, 5625, 5929, 6561, 7225, 7569, 8281, 8649, 9025, 9801, 11025, 12321, 13225, 13689, 14161, 14641, 15129, 15625, 16641, 17689, 18225, 19881, 20449 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1000

MATHEMATICA

With[{nn=500}, Complement[Range[1, nn, 2], Prime[Range[PrimePi[nn]]]]^2] (* Harvey P. Dale, Nov 12 2012 *)

PROG

(PARI) je=[]; forstep(n=1, 301, 2, if(isprime(n), n+1, je=concat(je, n^2))); je

(PARI) { n=0; forstep (m=1, 10^9, 2, if(!isprime(m), write("b062532.txt", n++, " ", m^2); if (n==1000, break)) ) } \\ Harry J. Smith, Aug 08 2009

CROSSREFS

Sequence in context: A236877 A236721 A255110 * A075730 A184068 A211690

Adjacent sequences:  A062529 A062530 A062531 * A062533 A062534 A062535

KEYWORD

easy,nonn

AUTHOR

Jason Earls, Jul 10 2001

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 August 4 09:03 EDT 2020. Contains 336201 sequences. (Running on oeis4.)