A118920 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A118920 as a triangular array

									2
								4		2
							10		8		2
						28		28		12		2
					84		96		54		16		2
				264		330		220		88		20		2
			858		1144		858		416		130		24		2
		2860		4004		3276		1820		700		180		28		2
	9724		14144		12376		7616		3400		1088		238		32		2
33592		50388		46512		31008		15504		5814		1596		304		36		2

A118920 as a square array

2	4	10	28	84	264	858	2860	9724	33592
2	8	28	96	330	1144	4004	14144	50388
2	12	54	220	858	3276	12376	46512
2	16	88	416	1820	7616	31008
2	20	130	700	3400	15504
2	24	180	1088	5814
2	28	238	1596
2	32	304
2	36
2

A118920 as an upper right triangle

2	4	10	28	84	264	858	2860	9724	33592
	2	8	28	96	330	1144	4004	14144	50388
		2	12	54	220	858	3276	12376	46512
			2	16	88	416	1820	7616	31008
				2	20	130	700	3400	15504
					2	24	180	1088	5814
						2	28	238	1596
							2	32	304
								2	36
									2