A294950 - OEIS

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A294950 as a triangular array

									1
								1		1
							1		1		3
						1		1		9		6
					1		1		33		90		13
				1		1		129		2220		1162		24
			1		1		513		59178		265132		17435		48
		1		1		2049		1594836		67180330		49163241		310193		86
	1		1		8193		43048770		17181660628		152662629227		13121450895		6286826		160

A294950 as a square array

1	1	1	1	1	1	1	1	1
1	1	1	1	1	1	1	1
3	9	33	129	513	2049	8193
6	90	2220	59178	1594836	43048770
13	1162	265132	67180330	17181660628
24	17435	49163241	152662629227
48	310193	13121450895
86	6286826
160

A294950 as an upper right triangle

1	1	1	1	1	1	1	1	1
	1	1	1	1	1	1	1	1
		3	9	33	129	513	2049	8193
			6	90	2220	59178	1594836	43048770
				13	1162	265132	67180330	17181660628
					24	17435	49163241	152662629227
						48	310193	13121450895
							86	6286826
								160