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A031281
a(n)=(# 1's)-(# 0's) in first n terms of A031269.
0
1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 3, 4, 5, 5, 5, 6, 5, 5, 5, 5, 6, 5, 5, 5, 6, 6, 7, 7, 7, 6, 5, 5, 5, 5, 5, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 5, 5, 6, 7, 7, 7, 8, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 7, 8, 7, 7, 8, 8, 8, 9, 10, 10, 9, 9, 10, 11, 11, 11, 11, 11
OFFSET
1,4
CROSSREFS
Sequence in context: A115265 A105223 A025859 * A203181 A113793 A289499
KEYWORD
nonn
STATUS
approved