|
%I #8 May 11 2015 18:07:32
%S 16,61,1166,1616,1661,6116,6161,6611,111666,116166,116616,116661,
%T 161166,161616,161661,166116,166161,166611,611166,611616,611661,
%U 616116,616161,616611,661116,661161,661611,666111
%N List of words over {1,6} with equal numbers of 1's and 6's.
%C This is to 6 as A214522 is to 5, as A214521 is to 4, as A214488 is to 3, and as A214218 is to 2. The subsequence of primes (when interpreted as decimal integers) is A087513.
%H Harvey P. Dale, <a href="/A214524/b214524.txt">Table of n, a(n) for n = 1..1000</a>
%t Sort[FromDigits/@Flatten[Table[Permutations[PadRight[{},2n,{1,6}]],{n,3}],1]] (* _Harvey P. Dale_, May 11 2015 *)
%Y Cf. A214218, A214488, A214521, A214522.
%K nonn,base,easy
%O 1,1
%A _Jonathan Vos Post_, Jul 19 2012
|
