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 A168533 Triangle read by rows, A000012 * A168532, as infinite lower triangular matrices. 1
 1, 2, 1, 4, 1, 1, 7, 2, 1, 1, 13, 2, 1, 1, 1, 20, 4, 2, 1, 1, 1, 34, 4, 2, 1, 1, 1, 1, 51, 7, 2, 2, 1, 1, 1, 1, 78, 7, 4, 2, 1, 1, 1, 1, 1, 112, 13, 4, 2, 2, 2, 21, 1, 1, 167, 13, 4, 2, 2, 1, 1, 1, 1, 1, 1, 230, 20, 7, 4, 2, 2, 21, 1, 1, 1, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row sums = A026905: (1, 3, 6, 11, 18, 29, 44, 66,...) Triangle A168534 = A168532 * A000012 LINKS FORMULA Triangle read by rows, A000012 * A168532; where A000012 = an infinite lower triangular matrix with all 1's. The operation takes partial sums of A168532 column terms. EXAMPLE First few rows of the triangle = 1; 2, 1; 4, 1, 1; 7, 2, 1, 1; 13, 2, 1, 1, 1; 20, 4, 2, 1, 1, 1; 34, 4, 2, 1, 1, 1, 1; 51, 7, 2, 2, 1, 1, 1, 1; 78, 7, 4, 2, 1, 1, 1, 1, 1; 112, 13, 4, 2, 2, 1, 1, 1, 1, 1; 167, 13, 4, 2, 2, 1, 1, 1, 1, 1, 1; 230, 20, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1; 330, 20, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1; 449, 34, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1; 616, 34, 13, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1; 825, 51, 13, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1; 1121, 51, 13, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1; CROSSREFS Cf. A168532, A026905, A168534 Sequence in context: A099510 A211232 A137633 * A191314 A191306 A191525 Adjacent sequences:  A168530 A168531 A168532 * A168534 A168535 A168536 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Nov 28 2009 STATUS approved

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Last modified November 30 08:16 EST 2021. Contains 349419 sequences. (Running on oeis4.)