A137252 - OEIS

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A137252 as a triangular array

												1
											0		1
										0		0		1
									0		0		1		1
								0		0		0		4		1
							0		0		0		4		11		1
						0		0		0		1		33		26		1
					0		0		0		0		42		171		57		1
				0		0		0		0		26		507		718		120		1
			0		0		0		0		8		840		4017		2682		247		1
		0		0		0		0		1		865		12866		25531		9327		502		1
	0		0		0		0		0		584		26831		138080		141904		30973		1013		1

A137252 as a square array

1	0	0	0	0	0	0	0	0	0	0	0
1	0	0	0	0	0	0	0	0	0	0
1	1	0	0	0	0	0	0	0	0
1	4	4	1	0	0	0	0	0
1	11	33	42	26	8	1	0
1	26	171	507	840	865	584
1	57	718	4017	12866	26831
1	120	2682	25531	138080
1	247	9327	141904
1	502	30973
1	1013
1

A137252 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0	0
	1	0	0	0	0	0	0	0	0	0	0
		1	1	0	0	0	0	0	0	0	0
			1	4	4	1	0	0	0	0	0
				1	11	33	42	26	8	1	0
					1	26	171	507	840	865	584
						1	57	718	4017	12866	26831
							1	120	2682	25531	138080
								1	247	9327	141904
									1	502	30973
										1	1013
											1