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%I #9 Aug 17 2021 02:26:37
%S 4,5,8,10,11,13,16,18,20,22,23,25,27,29,32,34,36,38,40,42,44,46,47,49,
%T 51,53,55,57,59,61,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,95,
%U 97,99,101,103,105,107,109,111,113,115,117,119,121,123,125
%N Positions of words in A076478 such that first digit != last digit.
%C The sequences A346301 and A346302 partition the positive integers.
%C See A076478 for a guide to related sequences.
%e The first fourteen words w(n) are 0, 1, 00, 01, 10, 11, 000, 001, 010, 011, 100, 101, 110, 111, so that a(1) = 4.
%t (See A007931.)
%Y Cf. A007931, A076478, A346301.
%K nonn,base
%O 1,1
%A _Clark Kimberling_, Jul 21 2021