A266419 Odd nonludic numbers.

9, 15, 19, 21, 27, 31, 33, 35, 39, 45, 49, 51, 55, 57, 59, 63, 65, 69, 73, 75, 79, 81, 85, 87, 93, 95, 99, 101, 103, 105, 109, 111, 113, 117, 123, 125, 129, 133, 135, 137, 139, 141, 145, 147, 151, 153, 155, 159, 163, 165, 167, 169, 171, 177, 183, 185, 187, 189, 191, 195, 197, 199, 201, 203, 205, 207, 213, 215

Offset: 1

Author

Antti Karttunen, Jan 28 2016

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10220

Crossrefs

Intersection of A005408 and A192607.

Cf. A192490, A266410, A237126.

Cf. also A071904, A266420.

Formula

Other identities. For all n >= 1:

a(n) = 1 + 2*A266410(n).