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A025146
(#1's in s(1),...,s(n)) - (#1's in r(1),...,r(n)), where s = A025142 and r = A025143.
0
1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, -1, 0, 1, 0, 1, 1, 0, 0, 0, -1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 2, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 2, 1, 1, 2, 1, 0, 1, 1, 1, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 2, 1, 0, 1, 0
OFFSET
1,4
LINKS
H. Harborth, Probleme und Lösungen, Mathematische Semesterberichte 44 (1997) 94.
CROSSREFS
Sequence in context: A157343 A373820 A102679 * A067397 A080586 A152906
KEYWORD
sign
STATUS
approved