A091010 Numbers having no divisor d such that also d-x and d+x are divisors for some x.

1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 16, 17, 19, 20, 21, 22, 23, 25, 26, 27, 29, 31, 32, 33, 34, 35, 37, 38, 39, 41, 43, 44, 46, 47, 49, 50, 51, 52, 53, 55, 57, 58, 59, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 73, 74, 76, 77, 79, 81, 82, 83, 85, 86, 87, 88, 89, 92, 93, 94

Offset: 1

Author

Reinhard Zumkeller, Dec 13 2003

Keywords

• nonn

Comments

A091009(a(n)) = 0; complement of A091011.