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 A128136 A128132 * A002260. 1
 1, 1, 4, 2, 4, 9, 3, 6, 9, 16, 4, 8, 12, 16, 25, 5, 10, 15, 20, 25, 36, 6, 12, 18, 24, 30, 36, 49, 7, 14, 21, 28, 35, 42, 49, 64, 8, 16, 24, 32, 40, 48, 56, 64, 81, 9, 18, 27, 36, 45, 54, 63, 72, 81, 100 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row sums = A006003: (1, 5, 15, 34, 65,...) A002260 * A128132 = A128137 LINKS FORMULA A128132 * A002260 as infinite lower triangular matrices. EXAMPLE First few rows of the triangle are: 1; 1, 4; 2, 4, 9; 3, 6, 9, 16; 4, 8, 12, 16, 25; 5, 10, 15, 20, 25, 36; 6, 12, 18, 24, 30, 36, 49; ... CROSSREFS Cf. A128132, A002260, A006003, A128137. Sequence in context: A016693 A137718 A007361 * A048147 A203001 A051666 Adjacent sequences:  A128133 A128134 A128135 * A128137 A128138 A128139 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Feb 16 2007 STATUS approved

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Last modified January 23 01:48 EST 2020. Contains 331166 sequences. (Running on oeis4.)