A031249 a(n)=(# 2's)-(# 3's) in first n terms of A031235.

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

Links

Table of n, a(n) for n=1..90.

Crossrefs

Sequence in context: A253250 A097477 A059572 * A031232 A362024 A030583

Adjacent sequences: A031246 A031247 A031248 * A031250 A031251 A031252

Keyword

nonn

Author

Clark Kimberling

Status

approved