A222020 - OEIS

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A222020 as a triangular array

									1
								3		3
							6		27		6
						13		188		188		13
					28		1363		3875		1363		28
				60		9838		86088		86088		9838		60
			129		70994		1892859		5925053		1892859		70994		129
		277		512456		41636522		403317044		403317044		41636522		512456		277
	595		3698699		916164266

A222020 as a square array

1	3	6	13	28	60	129	277	595
3	27	188	1363	9838	70994	512456	3698699
6	188	3875	86088	1892859	41636522	916164266
13	1363	86088	5925053	403317044
28	9838	1892859	403317044
60	70994	41636522
129	512456
277

A222020 as an upper right triangle

1	3	6	13	28	60	129	277	595
	3	27	188	1363	9838	70994	512456	3698699
		6	188	3875	86088	1892859	41636522	916164266
			13	1363	86088	5925053	403317044
				28	9838	1892859	403317044
					60	70994	41636522
						129	512456
							277