A073219 The terms of A073211 (sums of two powers of 11) divided by 2.
1, 6, 11, 61, 66, 121, 666, 671, 726, 1331, 7321, 7326, 7381, 7986, 14641, 80526, 80531, 80586, 81191, 87846, 161051, 885781, 885786, 885841, 886446, 893101, 966306, 1771561, 9743586, 9743591, 9743646, 9744251, 9750906, 9824111, 10629366, 19487171
Offset: 1
Examples
a(4) = 61 = (11^2+11^0) / 2.
Crossrefs
Cf. A073211.
Formula
T(n,m) = (11^n + 11^m) / 2, n = 0, 1, 2, 3 ..., m = 0, 1, 2, 3, ... n.