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 A144337 Triangle read by rows, A000012 * (2*A144328 - A000012) 1
 1, 2, 1, 3, 2, 3, 4, 3, 6, 5, 5, 4, 9, 10, 7, 6, 5, 12, 15, 14, 9, 7, 6, 15, 10, 21, 18, 11, 8, 7, 18, 25, 28, 27, 22, 13, 9, 8, 21, 30, 35, 36, 33, 26, 15, 10, 9, 24, 35, 42, 45, 44, 39, 30, 17, 11, 10, 27, 40, 49, 54, 55, 52, 45, 34, 19 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The operation (2*A144328 - A000012) creates a crescendo triangle with the first n terms of the sequence (1, 1, 3, 5, 7,...) as the n-th row. Row sums = A081489: (1, 3, 8, 18, 35, 61, 98, 148,...). LINKS EXAMPLE First few rows of the triangle = 1; 2, 1; 3, 2, 3; 4, 3, 6, 5; 5, 4, 9, 10, 7; 6, 5, 12, 15, 14, 9; 7, 6, 15, 20, 21, 18, 11; 8, 7, 18, 25, 28, 27, 22, 13; 9, 8, 21, 30, 35, 36, 33, 26, 15; 10, 9, 24, 35, 42, 45, 44, 39, 30, 17; ... CROSSREFS Cf. A144328, A081489. Sequence in context: A201592 A115872 A133926 * A143929 A153583 A029163 Adjacent sequences:  A144334 A144335 A144336 * A144338 A144339 A144340 KEYWORD nonn,tabl AUTHOR Gary W. Adamson & Roger L. Bagula, Sep 18 2008 STATUS approved

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Last modified June 18 21:05 EDT 2013. Contains 226356 sequences.