A259971 - OEIS

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A259971 as a triangular array

							1
						1		1
					2		5		3
				10		40		51		21
			122		644		1236		1029		315
		3346		21496		54060		66780		40635		9765
	196082		1471460		4527228		7328580		6596100		3134565		615195

A259971 as a square array

1	1	2	10	122	3346	196082
1	5	40	644	21496	1471460
3	51	1236	54060	4527228
21	1029	66780	7328580
315	40635	6596100
9765	3134565
615195

A259971 as an upper right triangle

1	1	2	10	122	3346	196082
	1	5	40	644	21496	1471460
		3	51	1236	54060	4527228
			21	1029	66780	7328580
				315	40635	6596100
					9765	3134565
						615195