A176464 The positions of primes in A065516.

1, 2, 8, 10, 13, 15, 16, 17, 19, 22, 24, 25, 26, 27, 31, 34, 35, 37, 39, 45, 48, 51, 53, 54, 55, 58, 59, 60, 61, 62, 65, 67, 71, 74, 75, 77, 79, 82, 83, 84, 85, 86, 89, 90, 92, 94, 97, 99, 100, 101, 102, 103, 105, 106, 109, 110, 112, 113, 115, 121, 122, 125, 126, 129, 130

Offset: 1

Author

Juri-Stepan Gerasimov, Apr 18 2010

Keywords

• nonn

Comments

Prime differences between products of 2 primes.

Programs

Maple

read("transforms3") : L := BFILETOLIST("b065516.txt") : for a from 1 to 200 do if isprime(op(a,L)) then printf("%d,", a) ; end if; end do: # R. J. Mathar, Apr 20 2010

Formula

A065516(a(n) ) =A000040(k).

Extensions

Entries checked by R. J. Mathar, Apr 20 2010