A143388 - OEIS

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A143388 as a triangular array

						1
					2		8
				40		221		1288
			7752		47652		297275		1874730
		11920740		76292736		490828828		3171317360		20563942288
	133749903324		872196460359		5700580759510		37332393806400		244914161562840		1609234420792845

A143388 as a square array

1	2	40	7752	11920740	133749903324
8	221	47652	76292736	872196460359
1288	297275	490828828	5700580759510
1874730	3171317360	37332393806400
20563942288	244914161562840
1609234420792845

A143388 as an upper right triangle

1	2	40	7752	11920740	133749903324
	8	221	47652	76292736	872196460359
		1288	297275	490828828	5700580759510
			1874730	3171317360	37332393806400
				20563942288	244914161562840
					1609234420792845