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 A143446 Triangle read by rows, A000012 * A143424, 1<=k<=n. 1
 1, 0, 2, -1, 2, 4, -1, 0, 4, 8, -2, 0, 4, 8, 16, -1, -2, 0, 8, 16, 32, -2, -2, 0, 8, 16, 32, 64, -2, -2, 0, 0, 16, 32, 64, 128, -1, -2, -4, 0, 16, 32, 64, 128, 256, -1, -4, -4, 0, 0, 32, 64, 128, 256, 512 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row sums = A085945: (1, 2, 5, 11, 26, 53, 116,...). LINKS FORMULA Triangle read by rows, A000012 * A143424, 1<=k<=n, where the operation A000012 * A143424 takes partial sums by column terms. EXAMPLE First few rows of the triangle = 1; 0, 2; -1, 2, 4; -1, 0, 4, 8; -2, 0, 4, 8, 16; -1, -2, 0, 8, 16, 32; -2, -2, 0, 8, 16, 32, 64; ... CROSSREFS Cf. A143424, A085945. Sequence in context: A007461 A181302 A304785 * A110330 A132014 A097864 Adjacent sequences:  A143443 A143444 A143445 * A143447 A143448 A143449 KEYWORD tabl,sign AUTHOR Gary W. Adamson, Aug 15 2008 STATUS approved

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Last modified April 22 16:32 EDT 2021. Contains 343177 sequences. (Running on oeis4.)