This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A321996 #4 Nov 24 2018 01:22:21 %S A321996 22,26,46,50,51,52,53,55,56,57,58,59,61,62,63,64,68,76,80,81,82,83,85, %T A321996 86,87,88,89,91,92,93,94,95,97,98,99,100,101,103,104,105,106,110,111, %U A321996 112,113,115,116,117,118,119,121,122,123,124,125,127,128,129,130,131,133,134 %N A321996 Numbers that cannot be written using six 6's and operations +, -, * and/or /. Complement of A171829. %C A321996 A171829 contains all but 3 nonnegative integers below 50, which motivates to list the complement, even though A171829 is finite and its complement, this sequence, contains all integers above 9072 except for 15552 and 46656. (These are the last three terms of A171829.) %Y A321996 Cf. A171829 (complement), A171826, A171827, A171828, A258068, A258069, A258070, A258071 (analog for 3, ..., 10). %Y A321996 Cf. A182002, A258097. %K A321996 nonn %O A321996 1,1 %A A321996 _M. F. Hasler_, Nov 23 2018