A167261 - OEIS

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A167261 as a triangular array

													0
												0		0
											0		0		0
										0		0		0		0
									1		0		0		0		1
								0		8		0		0		8		0
							0		0		62		0		62		0		0
						0		0		0		454		454		0		0		0
					0		0		0		0		4006		0		0		0		0
				1		0		0		0		33344		33344		0		0		0		1
			0		64		0		0		270827		0		270827		0		0		64		0
		0		0		8072		0		2152050		0		0		2152050		0		8072		0		0
	0		0		0

A167261 as a square array

0	0	0	0	1	0	0	0	0	1	0	0	0
0	0	0	0	8	0	0	0	0	64	0	0
0	0	0	0	62	0	0	0	0	8072	0
0	0	0	0	454	0	0	0	0
1	8	62	454	4006	33344	270827	2152050
0	0	0	0	33344	0	0
0	0	0	0	270827	0
0	0	0	0	2152050
0	0	0	0
1	64	8072
0	0
0

A167261 as an upper right triangle

0	0	0	0	1	0	0	0	0	1	0	0	0
	0	0	0	0	8	0	0	0	0	64	0	0
		0	0	0	0	62	0	0	0	0	8072	0
			0	0	0	0	454	0	0	0	0
				1	8	62	454	4006	33344	270827	2152050
					0	0	0	0	33344	0	0
						0	0	0	0	270827	0
							0	0	0	0	2152050
								0	0	0	0
									1	64	8072
										0	0
											0