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%I #10 Sep 08 2022 08:46:19
%S 1,6,11,16,61,66,111,116,161,166,611,616,661,666,1111,1116,1161,1166,
%T 1611,1616,1661,1666,6111,6116,6161,6166,6611,6616,6661,6666,11111,
%U 11116,11161,11166,11611,11616,11661,11666,16111,16116,16161,16166,16611,16616
%N Numbers using only digits 1 and 6.
%C Product of digits of n is a power of 6; subsequence of A276038.
%C Prime terms are in A020454.
%t Join @@ (FromDigits /@ Tuples[{1,6}, #] & /@ Range[5]) (* _Giovanni Resta_, Mar 25 2017 *)
%o (Magma) [n: n in [1..20000] | Set(IntegerToSequence(n, 10)) subset {1, 6}]
%Y Cf. Numbers using only digits 1 and k for k = 0 and k = 2 - 9: A007088 (k = 0), A007931 (k = 2), A032917 (k = 3), A032822 (k = 4) , A276037 (k = 5), this sequence (k = 6), A276039 (k = 7), A213084 (k = 8), A284294 (k = 9).
%K nonn,base
%O 1,2
%A _Jaroslav Krizek_, Mar 25 2017
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