A189217 Triangle read by rows of the index of the least k-gonal number A189216(n,k).

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

Offset: 3

Author

T. D. Noe, Apr 18 2011

Keywords

• nonn
• tabl

Comments

The n-th term of the n-th row is 2. The first and second columns are A188893 and A188897.

Examples

			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