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

Author

Jonathan Vos Post, Mar 08 2006

Keywords

• easy
• nonn

Examples

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

Formula

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