Sum of balanced ternary digits in n. Replace 3^k with 1 in balanced ternary expansion of n.
0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 2, 3, 2, 1, 0, 1, 0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 2, 1, 2, 3
1 seqfan posts
Wed Sep 21 22:53:41 CEST 2011 [seqfan] Re: Fun with subsequences