A213550 - OEIS

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A213550 as a triangular array

											1
										5		2
									15		9		3
								35		25		13		4
							70		55		35		17		5
						126		105		75		45		21		6
					210		182		140		95		55		25		7
				330		294		238		175		115		65		29		8
			495		450		378		294		210		135		75		33		9
		715		660		570		462		350		245		155		85		37		10
	1001		935		825		690		546

A213550 as a square array

1	5	15	35	70	126	210	330	495	715	1001
2	9	25	55	105	182	294	450	660	935
3	13	35	75	140	238	378	570	825
4	17	45	95	175	294	462	690
5	21	55	115	210	350	546
6	25	65	135	245
7	29	75	155
8	33	85
9	37
10

A213550 as an upper right triangle

1	5	15	35	70	126	210	330	495	715	1001
	2	9	25	55	105	182	294	450	660	935
		3	13	35	75	140	238	378	570	825
			4	17	45	95	175	294	462	690
				5	21	55	115	210	350	546
					6	25	65	135	245
						7	29	75	155
							8	33	85
								9	37
									10