A208864 - OEIS

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A208864 as a triangular array

									1
								2		2
							5		11		5
						15		127		127		15
					51		1691		5796		1691		51
				187		23047		273049		273049		23047		187
			715		315203		12883280		44452082		12883280		315203		715
		2795		4313071		607924387		7240366702		7240366702		607924387		4313071		2795
	11051		59022155

A208864 as a square array

1	2	5	15	51	187	715	2795	11051
2	11	127	1691	23047	315203	4313071	59022155
5	127	5796	273049	12883280	607924387
15	1691	273049	44452082	7240366702
51	23047	12883280	7240366702
187	315203	607924387
715	4313071
2795

A208864 as an upper right triangle

1	2	5	15	51	187	715	2795	11051
	2	11	127	1691	23047	315203	4313071	59022155
		5	127	5796	273049	12883280	607924387
			15	1691	273049	44452082	7240366702
				51	23047	12883280	7240366702
					187	315203	607924387
						715	4313071
							2795