A113911 Prime numbers not appearing in the nextprime(x^2) sequence A007491.

3, 7, 13, 19, 23, 31, 41, 43, 47, 59, 61, 71, 73, 79, 89, 97, 103, 107, 109, 113, 131, 137, 139, 151, 157, 163, 167, 179, 181, 191, 193, 199, 211, 223, 229, 233, 239, 241, 251, 263, 269, 271, 277, 281, 283, 307, 311, 313, 317, 337, 347, 349, 353, 359, 373, 379

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Formula

a(n) ~ n log n. - Charles R Greathouse IV, Apr 09 2013

Mathematica

Complement[ Prime@Range@75, Prime[ PrimePi[ Range@19^2] + 1]] (* Robert G. Wilson v *)

Prog

(PARI) is(n)=isprime(n)&&n>nextprime(sqrtint(n)^2) \\ Charles R Greathouse IV, Apr 09 2013

Crossrefs

Sequence in context: A133387 A105399 A133261 * A365241 A051635 A136009

Adjacent sequences: A113908 A113909 A113910 * A113912 A113913 A113914

Keyword

nonn,easy

Author

Jorge Coveiro, Jan 29 2006

Extensions

More terms from Robert G. Wilson v, Jan 30 2006

Status

approved