A231515 - OEIS

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A231515 as a triangular array

									2
								2		2
							4		6		4
						7		14		14		7
					12		35		78		35		12
				21		90		343		343		90		21
			37		225		1537		2594		1537		225		37
		65		569		7505		19435		19435		7505		569		65
	114		1441		35872		158061		256846		158061		35872		1441		114
200		3640		168887		1275558		3691558

A231515 as a square array

2	2	4	7	12	21	37	65	114	200
2	6	14	35	90	225	569	1441	3640
4	14	78	343	1537	7505	35872	168887
7	35	343	2594	19435	158061	1275558
12	90	1537	19435	256846	3691558
21	225	7505	158061
37	569	35872
65	1441
114

A231515 as an upper right triangle

2	2	4	7	12	21	37	65	114	200
	2	6	14	35	90	225	569	1441	3640
		4	14	78	343	1537	7505	35872	168887
			7	35	343	2594	19435	158061	1275558
				12	90	1537	19435	256846	3691558
					21	225	7505	158061
						37	569	35872
							65	1441
								114