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 A134838 Triangle read by rows, n-th row = first n terms of an array formed by A051731 * A051731(transform). 1
 1, 1, 2, 1, 1, 2, 1, 2, 1, 3, 1, 1, 1, 2, 1, 2, 2, 2, 1, 4, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 1, 4, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 2, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 2, 1, 2, 2, 2, 1, 2, 1, 4 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row sums = sigma(n), A000203: (1, 3, 4, 7, 6, 12, 8, ...). Right border = d(n), A000005: (1, 2, 2, 3, 2, 4, 2, 4, ...). LINKS FORMULA Given the transform A051731 * A051731(transform), extract the first n terms of each row to form the triangle. EXAMPLE First few rows of the array:   1, 1, 1, 1, 1, 1, 1, ...   1, 2, 1, 2, 1, 2, 1, ...   1, 1, 2, 1, 1, 2, 1, ...   1, 2, 1, 3, 1, 2, 1, ...   1, 1, 1, 1, 2, 1, 1, ...   1, 2, 2, 2, 1, 4, 1, ...   ... First few rows of the triangle:   1;   1, 2;   1, 1, 2;   1, 2, 1, 3;   1, 1, 1, 1, 2;   1, 2, 2, 2, 1, 4;   1, 1, 1, 1, 1, 1, 2;   1, 2, 1, 3, 1, 2, 1, 4;   1, 1, 2, 1, 1, 2, 1, 1, 3;   1, 2, 1, 2, 2, 2, 1, 2, 1, 4;   ... CROSSREFS Cf. A051731, A000203, A000005. Sequence in context: A084746 A128259 A051194 * A049843 A131374 A207409 Adjacent sequences:  A134835 A134836 A134837 * A134839 A134840 A134841 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Nov 12 2007 STATUS approved

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Last modified August 15 20:16 EDT 2022. Contains 356148 sequences. (Running on oeis4.)