A210801 - OEIS

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A210801 as a triangular array

										1
									3		1
								6		5		2
							12		15		10		3
						21		39		37		19		5
					39		90		111		81		35		8
				66		198		300		281		171		64		13
			120		414		750		855		659		346		115		21
		201		846		1776		2391		2230		1474		684		205		34
	363		1683		4044		6255		6828		5441		3170		1323		362		55

A210801 as a square array

1	3	6	12	21	39	66	120	201	363
1	5	15	39	90	198	414	846	1683
2	10	37	111	300	750	1776	4044
3	19	81	281	855	2391	6255
5	35	171	659	2230	6828
8	64	346	1474	5441
13	115	684	3170
21	205	1323
34	362
55

A210801 as an upper right triangle

1	3	6	12	21	39	66	120	201	363
	1	5	15	39	90	198	414	846	1683
		2	10	37	111	300	750	1776	4044
			3	19	81	281	855	2391	6255
				5	35	171	659	2230	6828
					8	64	346	1474	5441
						13	115	684	3170
							21	205	1323
								34	362
									55