A220810 - OEIS

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A220810 as a triangular array

									1
								2		2
							4		8		4
						8		38		38		8
					16		168		371		168		16
				32		726		3466		3466		726		32
			64		3088		30015		62400		30015		3088		64
		128		12974		250766		1037774		1037774		250766		12974		128
	256		54000		2050888		16734366		33511894		16734366		2050888		54000		256
512

A220810 as a square array

1	2	4	8	16	32	64	128	256	512
2	8	38	168	726	3088	12974	54000
4	38	371	3466	30015	250766	2050888
8	168	3466	62400	1037774	16734366
16	726	30015	1037774	33511894
32	3088	250766	16734366
64	12974	2050888
128	54000
256

A220810 as an upper right triangle

1	2	4	8	16	32	64	128	256	512
	2	8	38	168	726	3088	12974	54000
		4	38	371	3466	30015	250766	2050888
			8	168	3466	62400	1037774	16734366
				16	726	30015	1037774	33511894
					32	3088	250766	16734366
						64	12974	2050888
							128	54000
								256