A124550 - OEIS

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A124550 as a triangular array

											1
										1		0
									1		1		0
								1		2		2		0
							1		3		7		5		0
						1		4		15		30		16		0
					1		5		26		91		159		66		0
				1		6		40		204		666		1056		348		0
			1		7		57		385		1899		5955		8812		2321		0
		1		8		77		650		4345		21180		65794		92062		19437		0
	1		9		100		1015		8616		57876		287568		901881

A124550 as a square array

1	1	1	1	1	1	1	1	1	1	1
0	1	2	3	4	5	6	7	8	9
0	2	7	15	26	40	57	77	100
0	5	30	91	204	385	650	1015
0	16	159	666	1899	4345	8616
0	66	1056	5955	21180	57876
0	348	8812	65794	287568
0	2321	92062	901881
0	19437
0

A124550 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	0	1	2	3	4	5	6	7	8	9
		0	2	7	15	26	40	57	77	100
			0	5	30	91	204	385	650	1015
				0	16	159	666	1899	4345	8616
					0	66	1056	5955	21180	57876
						0	348	8812	65794	287568
							0	2321	92062	901881
								0	19437
									0