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 A153283 A triangular sequence designed with row sums 2*3^n. 0
 2, 3, 3, 2, 14, 2, 2, 25, 25, 2, 2, 36, 86, 36, 2, 2, 47, 194, 194, 47, 2, 2, 56, 304, 734, 304, 56, 2, 2, 69, 410, 3412, 410, 69, 2, 2, 80, 518, 5961, 5961, 518, 80, 2 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Row sums are: {2, 6, 18, 54, 162, 486., 1458, 4374., 13122,...}. Sequence was calculated to the 3^n level by hand. LINKS EXAMPLE {2}, {3, 3}, {2, 14, 2}, {2, 25, 25, 2}, {2, 36, 86, 36, 2}, {2, 47, 194, 194, 47, 2}, {2, 56, 304, 734, 304, 56, 2}, {2, 69, 410, 3412, 410, 69, 2}, {2, 80, 518, 5961, 5961, 518, 80, 2} MATHEMATICA a = {{1}, {3/2, 3/2}, {1, 7, 1}, {1, 25/2, 25/2, 1}, {1, 18, 43, 18, 1}, {1, 23.5, 97, 97, 23.5, 1}, {1, 28, 152, 367, 152, 28, 1}, {1, 34.5, 205, 1706, 205, 34.5, 1}, {1, 40, 259, 2980.5, 2980.5, 259, 40, 1}} b = Rationalize[2*a]; Flatten[b] CROSSREFS Sequence in context: A153516 A153311 A153312 * A153288 A153479 A153489 Adjacent sequences:  A153280 A153281 A153282 * A153284 A153285 A153286 KEYWORD nonn,tabl AUTHOR Roger L. Bagula, Dec 23 2008 STATUS approved

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Last modified June 25 08:27 EDT 2021. Contains 345453 sequences. (Running on oeis4.)