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 A140704 A051731^3 * A000012. 1
 1, 4, 1, 4, 1, 1, 10, 4, 1, 1, 4, 1, 1, 1, 1, 16, 7, 4, 1, 1, 1, 4, 1, 1, 1, 1, 1, 1, 20, 10, 4, 4, 1, 1, 1, 1, 10, 4, 4, 1, 1, 1, 1, 1, 1, 16, 7, 4, 4, 4, 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 40, 22, 13, 7, 4, 4, 1, 1, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row sums = A007430: (1, 5, 6, 16, 8, 30, 10,...). Left column = A007426: (1, 4, 4, 10, 4, 16, 4,...). LINKS FORMULA A051731^3 * A000012 as infinite lower triangular matrices, where A051731 = the inverse Mobius transform and A000012 an infinite lower triangular matrix with all 1's. EXAMPLE First few rows of the triangle are: 1; 4, 1; 4, 1, 1; 10, 4, 1, 1; 4, 1, 1, 1, 1; 16, 7, 4, 1, 1, 1; 4, 1, 1, 1, 1, 1, 1; 20, 10, 4, 4, 1, 1, 1, 1; 10, 4, 4, 1, 1, 1, 1, 1, 1; ... CROSSREFS Cf. A051731, A007430, A007426. Sequence in context: A010641 A165486 A100086 * A030748 A144865 A096622 Adjacent sequences:  A140701 A140702 A140703 * A140705 A140706 A140707 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, May 24 2008 STATUS approved

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Last modified May 20 13:02 EDT 2022. Contains 353873 sequences. (Running on oeis4.)