A278414 - OEIS

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A278414 as a triangular array

									0
								0		0
							1		20		1
						15		264		264		15
					90		2550		9354		2550		90
				357		22267		201539		201539		22267		357
			1107		166762		3576730		11454780		3576730		166762		1107
		2907		1046418		58069125		514122657		514122657		58069125		1046418		2907
	6765		5586207

A278414 as a square array

0	0	1	15	90	357	1107	2907	6765
0	20	264	2550	22267	166762	1046418	5586207
1	264	9354	201539	3576730	58069125
15	2550	201539	11454780	514122657
90	22267	3576730	514122657
357	166762	58069125
1107	1046418
2907

A278414 as an upper right triangle

0	0	1	15	90	357	1107	2907	6765
	0	20	264	2550	22267	166762	1046418	5586207
		1	264	9354	201539	3576730	58069125
			15	2550	201539	11454780	514122657
				90	22267	3576730	514122657
					357	166762	58069125
						1107	1046418
							2907