A249982 - OEIS

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A249982 as a triangular array

										4
									6		10
								8		24		20
							10		42		88		64
						12		64		208		384		136
					14		90		426		1242		1606		466
				16		120		728		3030		6856		7138		1012
			18		154		1178		6252		22560		43068		31380		3580
		20		192		1744		11524		55372		168506		245860		141272		7864
	22		234		2508		19574		123154

A249982 as a square array

4	6	8	10	12	14	16	18	20	22
10	24	42	64	90	120	154	192	234
20	88	208	426	728	1178	1744	2508
64	384	1242	3030	6252	11524	19574
136	1606	6856	22560	55372	123154
466	7138	43068	168506
1012	31380	245860
3580	141272
7864

A249982 as an upper right triangle

4	6	8	10	12	14	16	18	20	22
	10	24	42	64	90	120	154	192	234
		20	88	208	426	728	1178	1744	2508
			64	384	1242	3030	6252	11524	19574
				136	1606	6856	22560	55372	123154
					466	7138	43068	168506
						1012	31380	245860
							3580	141272
								7864