A256550 - OEIS

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A256550 as a triangular array

										1
									0		1
								0		1		1
							0		2		3		1
						0		5		12		6		1
					0		15		50		40		10		1
				0		52		225		250		100		15		1
			0		203		1092		1575		875		210		21		1
		0		877		5684		10192		7350		2450		392		28		1
	0		4140		31572		68208		61152		26460		5880		672		36		1

A256550 as a square array

1	0	0	0	0	0	0	0	0	0
1	1	2	5	15	52	203	877	4140
1	3	12	50	225	1092	5684	31572
1	6	40	250	1575	10192	68208
1	10	100	875	7350	61152
1	15	210	2450	26460
1	21	392	5880
1	28	672
1	36
1

A256550 as an upper right triangle

1	0	0	0	0	0	0	0	0	0
	1	1	2	5	15	52	203	877	4140
		1	3	12	50	225	1092	5684	31572
			1	6	40	250	1575	10192	68208
				1	10	100	875	7350	61152
					1	15	210	2450	26460
						1	21	392	5880
							1	28	672
								1	36
									1