A179112 - OEIS

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A179112 as a triangular array

										2
									4		4
								6		18		6
							9		64		64		9
						12		193		629		193		12
					16		501		5191		5191		501		16
				20		1180		35084		127771		35084		1180		20
			25		2529		201142		2563468		2563468		201142		2529		25
		30		5080		1001345		42356325		157360559		42356325		1001345		5080		30
	36

A179112 as a square array

2	4	6	9	12	16	20	25	30	36
4	18	64	193	501	1180	2529	5080
6	64	629	5191	35084	201142	1001345
9	193	5191	127771	2563468	42356325
12	501	35084	2563468	157360559
16	1180	201142	42356325
20	2529	1001345
25	5080
30

A179112 as an upper right triangle

2	4	6	9	12	16	20	25	30	36
	4	18	64	193	501	1180	2529	5080
		6	64	629	5191	35084	201142	1001345
			9	193	5191	127771	2563468	42356325
				12	501	35084	2563468	157360559
					16	1180	201142	42356325
						20	2529	1001345
							25	5080
								30