A218651 - OEIS

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A218651 as a triangular array

									4
								4		4
							16		16		16
						36		66		66		36
					94		292		610		292		94
				236		1280		4946		4946		1280		236
			602		5644		44712		82188		44712		5644		602
		1528		24782		391888		1374954		1374954		391888		24782		1528
	3882		108940		3441914		23370578		45453172

A218651 as a square array

4	4	16	36	94	236	602	1528	3882
4	16	66	292	1280	5644	24782	108940
16	66	610	4946	44712	391888	3441914
36	292	4946	82188	1374954	23370578
94	1280	44712	1374954	45453172
236	5644	391888
602	24782
1528

A218651 as an upper right triangle

4	4	16	36	94	236	602	1528	3882
	4	16	66	292	1280	5644	24782	108940
		16	66	610	4946	44712	391888	3441914
			36	292	4946	82188	1374954	23370578
				94	1280	44712	1374954	45453172
					236	5644	391888
						602	24782
							1528