A264831 - OEIS

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A264831 as a triangular array

								1
							1		1
						1		2		1
					1		4		3		1
				2		15		33		7		1
			4		134		495		288		27		1
		8		978		17181		32296		5400		84		1
	16		10370		881444		4911976		2648254		165333		533		2
48		114292		43181739

A264831 as a square array

1	1	1	1	2	4	8	16	48
1	2	4	15	134	978	10370	114292
1	3	33	495	17181	881444	43181739
1	7	288	32296	4911976
1	27	5400	2648254
1	84	165333
1	533
2

A264831 as an upper right triangle

1	1	1	1	2	4	8	16	48
	1	2	4	15	134	978	10370	114292
		1	3	33	495	17181	881444	43181739
			1	7	288	32296	4911976
				1	27	5400	2648254
					1	84	165333
						1	533
							2