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 A131919 A002024 + A131821 - A000012. 0
 1, 3, 3, 5, 3, 5, 7, 4, 4, 7, 9, 5, 5, 5, 9, 11, 6, 6, 6, 6, 11, 13, 7, 7, 7, 7, 7, 13, 15, 8, 8, 8, 8, 8, 8, 15, 17, 9, 9, 9, 9, 9, 9, 9, 17, 19, 10, 10, 10, 10, 10, 10, 10, 10, 19 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Row sums = A028872: (1, 6, 13, 22, 33, 46,...). LINKS FORMULA A002024 + A131821 - A000012 as infinite lower triangular matrices. EXAMPLE First few rows of the triangle are: 1; 3, 3; 5, 3, 5; 7, 4, 4, 7; 9, 5, 5, 5, 9; 11, 6, 6, 6, 6, 11; 13, 7, 7, 7, 7, 7, 13; ... CROSSREFS Cf. A002024, A131821, A000012, A028872. Sequence in context: A182731 A101772 A158894 * A185154 A204022 A131832 Adjacent sequences:  A131916 A131917 A131918 * A131920 A131921 A131922 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Jul 28 2007 STATUS approved

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