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 A136157 Triangle by columns, (3, 1, 0, 0, 0, ...) in every column. 2
 3, 1, 3, 0, 1, 3, 0, 0, 1, 3, 0, 0, 0, 1, 3, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Triangle A136158 is generated from A136157. LINKS Table of n, a(n) for n=1..78. FORMULA Triangle by columns, (3, 1, 0, 0, 0, ...) in every column. By rows, for n>1, (n-1) zeros followed by 1, 3. Infinite lower triangular matrix with (3, 3, 3, ...) in the main diagonal and (1, 1, 1, ...) in the subdiagonal, with the rest zeros. EXAMPLE First few rows of the triangle: 3; 1, 3; 0, 1, 3; 0, 0, 1, 3; 0, 0, 0, 1, 3; 0, 0, 0, 0, 1, 3; ... MATHEMATICA Table[PadLeft[{1, 3}, n, {0}], {n, 20}]//Flatten (* Harvey P. Dale, Apr 04 2018 *) CROSSREFS Cf. A136158. Sequence in context: A167274 A201679 A131088 * A266260 A143353 A127172 Adjacent sequences: A136154 A136155 A136156 * A136158 A136159 A136160 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Dec 16 2007 STATUS approved

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Last modified December 5 02:53 EST 2023. Contains 367567 sequences. (Running on oeis4.)