A196841 - OEIS

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A196841 as a triangular array

										1
									1		1
								1		4		3
							1		8		19		12
						1		13		59		107		60
					1		19		137		461		702		360
				1		26		270		1420		3929		5274		2520
			1		34		478		3580		15289		36706		44712		20160
		1		43		784		7882		47509		174307		375066		422568		181440
	1		53		1214		15722		126329		649397

A196841 as a square array

1	1	1	1	1	1	1	1	1	1
1	4	8	13	19	26	34	43	53
3	19	59	137	270	478	784	1214
12	107	461	1420	3580	7882	15722
60	702	3929	15289	47509	126329
360	5274	36706	174307	649397
2520	44712	375066
20160	422568
181440

A196841 as an upper right triangle

1	1	1	1	1	1	1	1	1	1
	1	4	8	13	19	26	34	43	53
		3	19	59	137	270	478	784	1214
			12	107	461	1420	3580	7882	15722
				60	702	3929	15289	47509	126329
					360	5274	36706	174307	649397
						2520	44712	375066
							20160	422568
								181440