A162903 a(n) = A162531(n)/11.

11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 27, 29, 31, 33, 35, 37, 41, 43, 47, 49, 53, 55, 59, 61, 67, 71, 73, 77, 79, 83, 89, 97, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227

Offset: 1

Author

Omar E. Pol and Zak Seidov, Jul 13 2009

Keywords

• nonn

Comments

The only composite terms are 12,14,15,16,18,20,21,22,25,27,33,35,49,55,77,121.

After a(42) = 11^2 = 121 all terms are primes: n > 42, a(n) = A000040(n-12).

Crossrefs

Cf. A162531 (Numbers k whose largest divisor <= sqrt(k) equals 11), A000040 (Prime numbers).

Cf. A161344, A162531, A162790, A162792.