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The terms of A073211 (sums of two powers of 11) divided by 2.
1

%I #8 Jul 27 2021 05:01:56

%S 1,6,11,61,66,121,666,671,726,1331,7321,7326,7381,7986,14641,80526,

%T 80531,80586,81191,87846,161051,885781,885786,885841,886446,893101,

%U 966306,1771561,9743586,9743591,9743646,9744251,9750906,9824111,10629366,19487171

%N The terms of A073211 (sums of two powers of 11) divided by 2.

%F T(n,m) = (11^n + 11^m) / 2, n = 0, 1, 2, 3 ..., m = 0, 1, 2, 3, ... n.

%e a(4) = 61 = (11^2+11^0) / 2.

%Y Cf. A073211.

%K nonn,easy,tabl

%O 1,2

%A _Jeremy Gardiner_, Jul 21 2002