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A189218 Triangle read by rows of the index of the least n-gonal number A189216(n,k). 1
2, 6, 2, 12, 81, 2, 2, 25, 143, 2, 5, 6, 42, 221, 2, 3, 9, 8, 63, 315, 2, 10, 2, 14, 10, 88, 425, 2, 2, 0, 56, 20, 12, 117, 551, 2, 0, 7, 13, 0, 27, 14, 150, 693, 2, 5, 4, 2, 11, 61, 35, 16, 187, 851, 2, 3, 3, 4, 28, 11, 43, 44, 18, 228, 1025, 2, 15, 9, 0, 99, 1989, 609, 117, 54, 20, 273, 1215, 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 A188894 and A188898.

LINKS

Table of n, a(n) for n=3..80.

EXAMPLE

The triangle begins:

2

6,   2

12,  81,   2

2,   25,   143,  2

5,   6,    42,   221,  2

3,   9,    8,    63,   315,  2

10,  2,    14,   10,   88,   425,  2

2,   0,    56,   20,   12,   117,  551,  2

0,   7,    13,   0,    27,   14,   150,  693,  2

CROSSREFS

Sequence in context: A319048 A066900 A079462 * A122663 A100892 A324189

Adjacent sequences:  A189215 A189216 A189217 * A189219 A189220 A189221

KEYWORD

nonn,tabl

AUTHOR

T. D. Noe, Apr 18 2011

STATUS

approved

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Last modified November 20 17:09 EST 2019. Contains 329337 sequences. (Running on oeis4.)