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 A189217 Triangle read by rows of the index of the least k-gonal number A189216(n,k). 1
 2, 8, 2, 20, 99, 2, 3, 35, 165, 2, 10, 9, 54, 247, 2, 6, 15, 11, 77, 345, 2, 25, 3, 21, 13, 104, 459, 2, 4, 0, 91, 28, 15, 135, 589, 2, 0, 14, 22, 0, 36, 17, 170, 735, 2, 14, 8, 3, 17, 86, 45, 19, 209, 897, 2, 8, 6, 7, 46, 16, 58, 55, 21, 252, 1075, 2, 50, 21, 0, 171, 3081, 861, 153, 66, 23, 299, 1269, 2 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 3,1 COMMENTS The n-th term of the n-th row is 2. The first and second columns are A188893 and A188897. LINKS EXAMPLE The triangle begins: 2, 8,   2 20,  99,  2 3,   35,  165,  2 10,  9,   54,   247,  2 6,   15,  11,   77,   345,  2 25,  3,   21,   13,   104,  459,   2 4,   0,   91,   28,   15,   135,   589,   2 0,   14,  22,   0,    36,   17,    170,   735,   2 CROSSREFS Sequence in context: A074723 A286455 A175183 * A183037 A063077 A245995 Adjacent sequences:  A189214 A189215 A189216 * A189218 A189219 A189220 KEYWORD nonn,tabl AUTHOR T. D. Noe, Apr 18 2011 STATUS approved

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Last modified January 19 17:59 EST 2020. Contains 331051 sequences. (Running on oeis4.)