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 A128257 Inverse Moebius transform of A097807. 0
 1, 0, 1, 2, -1, 1, -1, 2, -1, 1, 2, -1, 1, -1, 1, 0, 1, 0, -1, -1, 1, 2, -1, 1, -1, 1, -1, 1, -2, 3, -2, 2, -1, 1, -1, 1, 3, -2, 2, -1, 1, -1, 1, -1, 1, 0, 1, 0, 0, 0, 1, -1, 1, -1, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS Row sums = A001227: (1, 1, 2, 1, 2, 2, 2,...), number of odd divisors of n. LINKS FORMULA A051731 * A097807 as infinite lower triangular matrices. EXAMPLE First few rows of the triangle are: 1; 0, 1; 2, -1, 1; -1, 2, -1, 1; 2, -1, 1, -1, 1; 0, 1, 0, 1, -1, 1; ... CROSSREFS Cf. A051731, A097807, A001227. Sequence in context: A211987 A165983 A083894 * A198254 A106035 A105141 Adjacent sequences:  A128254 A128255 A128256 * A128258 A128259 A128260 KEYWORD tabl,sign AUTHOR Gary W. Adamson, Feb 21 2007 STATUS approved

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