%I #6 May 08 2021 08:38:58

%S 5,6,8,9,13,15,19,20,21,24,28,29,30,31,33,36,41,43,44,45,47,48,51,54,

%T 59,62,64,65,66,67,69,71,72,75,78,81,86,89,91,93,94,95,97,98,99,101,

%U 102,105,107,108,111,114,117,123,127,130,131,134,136,137,138

%N Positions of words in A342753 in which 1st digit != last digit.

%C Every positive integer is in exactly one of the sequences A342780 and A342781.

%e Positions of the first 8 words in which 1st digit != last digit can be read from a list of the first 16 words in A342753: 0, 00, 1, 000, 01, 10, 0000, 001, 100, 010, 00000, 11, 0001, 0100, 1000, 0010.

%t (See A342753.)

%Y Cf. A342753, A342781.

%K nonn,base

%O 1,1

%A _Clark Kimberling_, May 07 2021