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 A272172 Triangle read by rows: T(n,k) in which row n lists the first n terms of A000203 in reverse order. 1
 1, 3, 1, 4, 3, 1, 7, 4, 3, 1, 6, 7, 4, 3, 1, 12, 6, 7, 4, 3, 1, 8, 12, 6, 7, 4, 3, 1, 15, 8, 12, 6, 7, 4, 3, 1, 13, 15, 8, 12, 6, 7, 4, 3, 1, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 12, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 28, 12, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 14, 28, 12, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 24, 14, 28 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA a(n) = A000203(A004736(n)). T(n,k) = A000203(n-k+1). EXAMPLE Triangle begins: 1; 3,   1; 4,   3,  1; 7,   4,  3,  1; 6,   7,  4,  3,  1; 12,  6,  7,  4,  3,  1; 8,  12,  6,  7,  4,  3,  1; 15,  8, 12,  6,  7,  4,  3,  1; 13, 15,  8, 12,  6,  7,  4,  3,  1; 18, 13, 15,  8, 12,  6,  7,  4,  3,  1; 12, 18, 13, 15,  8, 12,  6,  7,  4,  3,  1; 28, 12, 18, 13, 15,  8, 12,  6,  7,  4,  3,  1; ... CROSSREFS Mirror of A245093. Column k gives A000203 starting in row k. Row sums give A024916. Cf. A004736, A104887, A272171. Sequence in context: A104568 A030758 A322103 * A104764 A152842 A307280 Adjacent sequences:  A272169 A272170 A272171 * A272173 A272174 A272175 KEYWORD nonn,tabl AUTHOR Omar E. Pol, Apr 21 2016 STATUS approved

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Last modified May 27 21:52 EDT 2020. Contains 334671 sequences. (Running on oeis4.)