A209701 - OEIS

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A209701 as a triangular array

											1
										0		2
									0		2		5
								0		3		7		12
							0		4		11		23		29
						0		5		16		41		70		70
					0		6		22		66		140		204		169
				0		7		29		99		247		455		577		408
			0		8		37		141		401		875		1423		1597		985
		0		9		46		193		613		1529		2965		4321		4348		2378
	0		10		56		256		895		2495		5549

A209701 as a square array

1	0	0	0	0	0	0	0	0	0	0
2	2	3	4	5	6	7	8	9	10
5	7	11	16	22	29	37	46	56
12	23	41	66	99	141	193	256
29	70	140	247	401	613	895
70	204	455	875	1529	2495
169	577	1423	2965	5549
408	1597	4321
985	4348
2378

A209701 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0
	2	2	3	4	5	6	7	8	9	10
		5	7	11	16	22	29	37	46	56
			12	23	41	66	99	141	193	256
				29	70	140	247	401	613	895
					70	204	455	875	1529	2495
						169	577	1423	2965	5549
							408	1597	4321
								985	4348
									2378