A181557 Indices k for which A031883(k) = 2 = A000959(k+1)-A000959(k), i.e., indices of (lesser) "twin" lucky numbers.

1, 3, 5, 9, 13, 16, 18, 27, 29, 35, 38, 46, 49, 53, 59, 69, 75, 80, 83, 87, 90, 95, 100, 102, 106, 117, 120, 136, 138, 141, 143, 149, 151, 154, 156, 159, 164, 167, 178, 182, 185, 187, 201, 205, 211, 215, 217, 221, 227, 229, 232, 246, 248, 256, 265, 271, 283, 286

Offset: 1

Author

M. F. Hasler, Oct 31 2010

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000959, A031883.