A115126 - OEIS

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A115126 as a triangular array

										1
									2		2
								3		5		5
							4		9		14		14
						5		14		28		42		42
					6		20		48		90		132		132
				7		27		75		165		297		429		429
			8		35		110		275		572		1001		1430		1430
		9		44		154		429		1001		2002		3432		4862		4862
	10		54		208		637		1638		3640		7072		11934		16796		16796
11		65		273		910

A115126 as a square array

1	2	3	4	5	6	7	8	9	10	11
2	5	9	14	20	27	35	44	54	65
5	14	28	48	75	110	154	208	273
14	42	90	165	275	429	637	910
42	132	297	572	1001	1638
132	429	1001	2002	3640
429	1430	3432	7072
1430	4862	11934
4862	16796
16796

A115126 as an upper right triangle

1	2	3	4	5	6	7	8	9	10	11
	2	5	9	14	20	27	35	44	54	65
		5	14	28	48	75	110	154	208	273
			14	42	90	165	275	429	637	910
				42	132	297	572	1001	1638
					132	429	1001	2002	3640
						429	1430	3432	7072
							1430	4862	11934
								4862	16796
									16796