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 A131911 2*A131821 - A128174. 1
 1, 4, 3, 5, 2, 5, 8, 1, 2, 7, 9, 2, 1, 2, 9, 12, 1, 2, 1, 2, 11, 13, 2, 1, 2, 1, 2, 13, 16, 1, 2, 1, 2, 1, 2, 15, 17, 2, 1, 2, 1, 2, 1, 2, 17, 20, 1, 2, 1, 2, 1, 2, 1, 2, 19 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Left column, congruent to {0, 1} mod 4, A042948: (1, 4, 5, 8, 9, 12, 13, 16, ...). Row sums = A131912: (1, 7, 12, 18, 23, 29, 34, ...). LINKS FORMULA 2*A131821 - A128174 as infinite lower triangular matrices. EXAMPLE First few rows of the triangle:    1;    4,  3;    5,  2,  5;    8,  1,  2,  7;    9,  2,  1,  2,  9;   12,  1,  2,  1,  2, 11;   13,  2,  1,  2,  1,  2, 13;   ... CROSSREFS Cf. A131821, A128174, A042948, A131912. Sequence in context: A352692 A339579 A081665 * A254037 A321154 A011206 Adjacent sequences:  A131908 A131909 A131910 * A131912 A131913 A131914 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Jul 27 2007 STATUS approved

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Last modified May 20 08:18 EDT 2022. Contains 353852 sequences. (Running on oeis4.)