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 A143211 Triangle read by rows, T(n,k) = F(n)*F(k); 1<=k<=n. 2
 1, 1, 1, 2, 2, 4, 3, 3, 6, 9, 5, 5, 10, 15, 25, 8, 8, 16, 24, 40, 64, 13, 13, 26, 39, 65, 104, 169, 21, 21, 42, 63, 105, 168, 273, 441, 34, 34, 68, 102, 170, 272, 442, 714, 1156, 55, 55, 110, 165, 275, 440, 715, 1155, 1870, 3025, 89, 89, 178, 267, 445, 712, 1157, 1869 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Left border = Fibonacci numbers, A000045. Right border = F(n)^2, A007598. Row sums = A143212: (1, 2, 8, 21, 60, 160, 429,...). LINKS FORMULA Triangle read by rows, T(n,k) = F(n)*F(k), 1<=k<=n; = A127647 * A000012 * A127647, as infinite lower triangular matrices. EXAMPLE First few rows of the triangle = 1; 1, 1; 2, 2, 4; 3, 3, 6, 9; 5, 5, 10, 15, 25; 8, 8, 16, 24, 40, 64; 13, 13, 26, 39, 65, 104, 169; 21, 21, 42, 63, 105, 168, 273, 441; ... Example: T(8,7) = 273 = 21*13 CROSSREFS Cf. A000045, A007598, A127647, A143212. Sequence in context: A205678 A128590 A143228 * A209755 A131052 A209138 Adjacent sequences:  A143208 A143209 A143210 * A143212 A143213 A143214 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Jul 30 2008 STATUS approved

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Last modified April 1 01:38 EDT 2020. Contains 333153 sequences. (Running on oeis4.)