A264638 - OEIS

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A264638 as a triangular array

									1
								1		1
							2		3		1
						4		28		16		1
					12		400		960		128		2
				36		7776		107568		46656		1152		4
			144		229392		21565440		71663616		4561920		12960		8
		576		9082368		10027929600		229132800000		98288640000		829440000		269568		16
	2880		481406976

A264638 as a square array

1	1	2	4	12	36	144	576	2880
1	3	28	400	7776	229392	9082368	481406976
1	16	960	107568	21565440	10027929600
1	128	46656	71663616	229132800000
2	1152	4561920	98288640000
4	12960	829440000
8	269568
16

A264638 as an upper right triangle

1	1	2	4	12	36	144	576	2880
	1	3	28	400	7776	229392	9082368	481406976
		1	16	960	107568	21565440	10027929600
			1	128	46656	71663616	229132800000
				2	1152	4561920	98288640000
					4	12960	829440000
						8	269568
							16