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 A157361 Triangle read by rows, A051731 * (A114810 * 0^(n-k)) 1
 1, 1, 1, 1, 0, 2, 1, 1, 0, 1, 1, 0, 0, 0, 4, 1, 1, 2, 0, 0, 2, 1, 0, 0, 0, 0, 0, 6, 1, 1, 0, 1, 0, 0, 0, 2, 1, 0, 2, 0, 0, 0, 0, 0, 4, 1, 1, 0, 0, 4, 0, 0, 0, 0, 4, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 1, 1, 2, 1, 0, 2, 0, 0, 0, 0, 0, 2 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,6 COMMENTS Row sums = A055653: (1, 2, 3, 3, 5, 6, 7, 5,...) LINKS FORMULA Triangle read by rows, A051731 * (A114810 * 0^(n-k)); where A051731 = the inverse Mobius transform and (A114810 * 0^(n-k)) = an infinite lower triangular matrix with A114810 as the main diagonal: (1, 1, 2, 1, 4, 2, 6,...) and the rest zeros. EXAMPLE First few rows of the triangle = 1; 1, 1; 1, 0, 2; 1, 1, 0, 1; 1, 0, 0, 0, 4; 1, 1, 2, 0, 0, 2; 1, 0, 0, 0, 0, 0, 6; 1, 1, 0, 1, 0, 0, 0, 2; 1, 0, 2, 0, 0, 0, 0, 0, 4; 1, 1, 0, 0, 4, 0, 0, 0, 0, 4; 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10; 1, 1, 2, 1, 0, 2, 0, 0, 0, 0, 0, 2; 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12; 1, 1, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 6; ... CROSSREFS Cf. A114810, A055653 Sequence in context: A271592 A128409 A133699 * A224444 A101808 A145865 Adjacent sequences:  A157358 A157359 A157360 * A157362 A157363 A157364 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Feb 28 2009 STATUS approved

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Last modified June 2 14:21 EDT 2020. Contains 334787 sequences. (Running on oeis4.)