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 A153868 Triangle read by rows, A135278 * (A040027 * 0^(n-k)). 1
 1, 2, 1, 3, 3, 3, 4, 6, 12, 9, 5, 10, 30, 45, 31, 6, 15, 60, 135, 186, 121, 7, 21, 105, 315, 651, 847, 523, 8, 28, 168, 630, 1736, 3388, 4184, 2469 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Row sums = A040027 starting (1, 3, 9, 31, 121, 523,...). Sum of n-th row terms = rightmost term of next row. LINKS Table of n, a(n) for n=0..35. FORMULA Triangle read by rows, A135278 * (A040027 * 0^(n-k)). Binomial transform of an infinite lower triangular matrix with A040027. (starting 1, 1, 3, 9, 31, 121,...) as the main and subdiagonals. EXAMPLE First few rows of the triangle 1; 2, 1; 3, 3, 3; 4, 6, 12, 9; 5, 10, 30, 45, 31; 6, 15, 60, 135, 186, 121; 7, 21, 105, 315, 651, 846, 523; 8, 28, 168, 630, 1736, 3388, 4184, 2469; ... CROSSREFS Cf. A040027, A135278. Sequence in context: A035384 A360033 A303974 * A341147 A325335 A262952 Adjacent sequences: A153865 A153866 A153867 * A153869 A153870 A153871 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Jan 03 2009 STATUS approved

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Last modified June 6 15:49 EDT 2023. Contains 363148 sequences. (Running on oeis4.)