A277767 - OEIS

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A277767 as a triangular array

										0
									0		0
								0		1		0
							0		4		2		0
						0		18		17		14		0
					0		80		204		330		56		0
				0		356		1989		9741		3666		284		0
			0		1584		21141		275018		270291		46289		1304		0
		0		7048		220549		7824415		20049229		8971150		560809		6248		0
	0		31360		2292380		221983169		1487830718

A277767 as a square array

0	0	0	0	0	0	0	0	0	0
0	1	4	18	80	356	1584	7048	31360
0	2	17	204	1989	21141	220549	2292380
0	14	330	9741	275018	7824415	221983169
0	56	3666	270291	20049229	1487830718
0	284	46289	8971150
0	1304	560809
0	6248
0

A277767 as an upper right triangle

0	0	0	0	0	0	0	0	0	0
	0	1	4	18	80	356	1584	7048	31360
		0	2	17	204	1989	21141	220549	2292380
			0	14	330	9741	275018	7824415	221983169
				0	56	3666	270291	20049229	1487830718
					0	284	46289	8971150
						0	1304	560809
							0	6248
								0