A137431 - OEIS

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A137431 as a triangular array

										1
									0		1
								0		3		1
							0		14		9		1
						0		66		83		18		1
					0		504		750		275		30		1
				0		4680		7954		3915		685		45		1
			0		51120		96852		58324		13965		1435		63		1
		0		660240		1349676		933156		280609		39480		2674		84		1
	0		9717120		21158064		16282412		5781132		1030449

A137431 as a square array

1	0	0	0	0	0	0	0	0	0
1	3	14	66	504	4680	51120	660240	9717120
1	9	83	750	7954	96852	1349676	21158064
1	18	275	3915	58324	933156	16282412
1	30	685	13965	280609	5781132
1	45	1435	39480	1030449
1	63	2674
1	84
1

A137431 as an upper right triangle

1	0	0	0	0	0	0	0	0	0
	1	3	14	66	504	4680	51120	660240	9717120
		1	9	83	750	7954	96852	1349676	21158064
			1	18	275	3915	58324	933156	16282412
				1	30	685	13965	280609	5781132
					1	45	1435	39480	1030449
						1	63	2674
							1	84
								1