A068218 - OEIS

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A068218 as a triangular array

									1
								2		2
							2		16		2
						4		84		84		4
					10		400		1056		400		10
				28		1820		9184		9184		1820		28
			84		8064		66276		126720		66276		8064		84
		264		35112		426888		1329768		1329768		426888		35112		264
	858		151008		2546544		11737440		19123776		11737440

A068218 as a square array

1	2	2	4	10	28	84	264	858
2	16	84	400	1820	8064	35112	151008
2	84	1056	9184	66276	426888	2546544
4	400	9184	126720	1329768	11737440
10	1820	66276	1329768	19123776
28	8064	426888	11737440
84	35112
264

A068218 as an upper right triangle

1	2	2	4	10	28	84	264	858
	2	16	84	400	1820	8064	35112	151008
		2	84	1056	9184	66276	426888	2546544
			4	400	9184	126720	1329768	11737440
				10	1820	66276	1329768	19123776
					28	8064	426888	11737440
						84	35112
							264