A043263 Sum of the digits of the n-th base 4 palindrome.
0, 1, 2, 3, 2, 4, 6, 2, 3, 4, 5, 4, 5, 6, 7, 6, 7, 8, 9, 2, 4, 6, 8, 4, 6, 8, 10, 6, 8, 10, 12, 2, 3, 4, 5, 4, 5, 6, 7, 6, 7, 8, 9, 8, 9, 10, 11, 4, 5, 6, 7, 6, 7, 8, 9, 8, 9, 10, 11, 10, 11, 12, 13, 6, 7, 8, 9, 8, 9, 10, 11, 10, 11, 12, 13, 12, 13, 14, 15, 2, 4
Offset: 1
Crossrefs
A014192 (base 4 palindromes)