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 A157030 Triangle read by rows, A156834 * A054521 1
 1, 2, 0, 2, 1, 0, 4, 0, 1, 0, 2, 1, 1, 1, 0, 8, 3, 0, 0, 1, 0, 2, 1, 1, 1, 1, 1, 0, 10, 0, 5, 0, 1, 0, 1, 0, 8, 7, 0, 1, 1, 0, 1, 1, 0, 12, 5, 6, 5, 0, 0, 10, 1, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 34, 10, 10, 0, 7, 0, 10, 0, 0, 1, 0 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Left border = A157019: (1, 2, 2, 4, 2, 8, 2, 10,...). LINKS Table of n, a(n) for n=1..76. FORMULA Triangle read by rows, A156834 * A054521; as infinite lower triangular matrices. EXAMPLE First few rows of the triangle = 1; 2, 0; 2, 1, 0; 4, 0, 1, 0; 2, 1, 1, 1, 0; 8, 3, 0, 0, 1, 0; 2, 1, 1, 1, 1, 1, 0; 10, 0, 5, 0, 1, 0, 1, 0; 8, 7, 0, 1, 1, 0, 1, 1, 0; 12, 5, 6, 5, 0, 0, 10, 1, 0; 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0; 34, 10, 10, 0, 7, 0, 1, 0, 0, 0, 1, 0; 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0; ... CROSSREFS Cf. A156834 (row sums), A054521. Sequence in context: A074905 A058548 A372876 * A080844 A321428 A362615 Adjacent sequences: A157027 A157028 A157029 * A157031 A157032 A157033 KEYWORD nonn,tabl,more AUTHOR Gary W. Adamson and Mats Granvik, Feb 21 2009 STATUS approved

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Last modified August 15 03:10 EDT 2024. Contains 375172 sequences. (Running on oeis4.)