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A031249
a(n)=(# 2's)-(# 3's) in first n terms of A031235.
0
0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 3, 4, 4, 5, 5, 4, 4, 3, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 4, 3, 4, 4, 4, 5, 5, 5
OFFSET
1,18
CROSSREFS
Sequence in context: A253250 A097477 A059572 * A031232 A362024 A030583
KEYWORD
nonn
STATUS
approved