A200057 - OEIS

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A200057 as a triangular array

											1
										1		2
									1		4		4
								1		6		10		4
							1		8		22		26		6
						1		10		36		78		68		10
					1		12		56		172		288		178		14
				1		14		78		324		840		1098		472		22
			1		16		106		546		1948		4172		4224		1276		34
		1		18		136		850		3914		11962		20978		16432		3462		52
	1		20		172		1252		7074		28554		74338

A200057 as a square array

1	1	1	1	1	1	1	1	1	1	1
2	4	6	8	10	12	14	16	18	20
4	10	22	36	56	78	106	136	172
4	26	78	172	324	546	850	1252
6	68	288	840	1948	3914	7074
10	178	1098	4172	11962	28554
14	472	4224	20978	74338
22	1276	16432
34	3462
52

A200057 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	2	4	6	8	10	12	14	16	18	20
		4	10	22	36	56	78	106	136	172
			4	26	78	172	324	546	850	1252
				6	68	288	840	1948	3914	7074
					10	178	1098	4172	11962	28554
						14	472	4224	20978	74338
							22	1276	16432
								34	3462
									52