A117325 Indices of primes in A117322 prime(n) modulo semiprime(n).

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 22, 25, 29, 33, 35, 50, 64, 73, 76, 82, 88, 100, 115, 120, 169, 174, 176, 188, 194, 202, 211, 214, 218, 249, 265, 325, 354, 363, 369, 370, 371, 372, 373, 374, 378, 379, 380, 384, 385, 386, 393, 394, 395, 396, 399, 400

Offset

1,2

Links

Table of n, a(n) for n=1..60.

Formula

n such that A117322(n) is prime. n such that A000040(n) modulo A001358(n) is in A000040.

Example

a(60) = 400 because semiprime(400) = 1355, prime(400) = 2741 and
2741 == 31 mod 1355, where 31 is prime.

Crossrefs

Sequence in context: A130225 A096902 A246081 * A180643 A017905 A333598

Adjacent sequences: A117322 A117323 A117324 * A117326 A117327 A117328

Keyword

easy,nonn

Author

Jonathan Vos Post, Mar 08 2006

Status

approved