A110135 - OEIS

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A110135 as a triangular array

										1
									2		1
								6		2		1
							20		8		2		1
						70		32		10		2		1
					252		136		44		12		2		1
				924		592		214		56		14		2		1
			3432		2624		1052		304		68		16		2		1
		12870		11776		5284		1632		406		80		18		2		1
	48620		53344		26840		9024		2332		520		92		20		2		1
184756		243392		137638		50304

A110135 as a square array

1	2	6	20	70	252	924	3432	12870	48620	184756
1	2	8	32	136	592	2624	11776	53344	243392
1	2	10	44	214	1052	5284	26840	137638
1	2	12	56	304	1632	9024	50304
1	2	14	68	406	2332
1	2	16	80	520
1	2	18	92
1	2	20
1	2
1

A110135 as an upper right triangle

1	2	6	20	70	252	924	3432	12870	48620	184756
	1	2	8	32	136	592	2624	11776	53344	243392
		1	2	10	44	214	1052	5284	26840	137638
			1	2	12	56	304	1632	9024	50304
				1	2	14	68	406	2332
					1	2	16	80	520
						1	2	18	92
							1	2	20
								1	2
									1