A118686 - OEIS

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A118686 as a triangular array

1

1 -1

1 -2 1

1 -4 5 -2

1 -10 29 -32 12

1 -16 89 -206 204 -72

1 -46 569 -2876 6384 -6192 2160

1 -76 1949 -19946 92664 -197712 187920 -64800

1 -286 17909 -429236 4281324 -19657152 41707440 -39528000 13608000

1 -496 77969 -4190126 94420884 -918735192 4169709360 -8798090400 8314488000 -2857680000

A118686 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`-1`	`-2`	`-4`	`-10`	`-16`	`-46`	`-76`	`-286`	`-496`
`1`	`5`	`29`	`89`	`569`	`1949`	`17909`	`77969`
`-2`	`-32`	`-206`	`-2876`	`-19946`	`-429236`	`-4190126`
`12`	`204`	`6384`	`92664`	`4281324`	`94420884`
`-72`	`-6192`	`-197712`	`-19657152`	`-918735192`
`2160`	`187920`	`41707440`	`4169709360`
`-64800`	`-39528000`	`-8798090400`
`13608000`	`8314488000`
`-2857680000`

A118686 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`-1`	`-2`	`-4`	`-10`	`-16`	`-46`	`-76`	`-286`	`-496`
		`1`	`5`	`29`	`89`	`569`	`1949`	`17909`	`77969`
			`-2`	`-32`	`-206`	`-2876`	`-19946`	`-429236`	`-4190126`
				`12`	`204`	`6384`	`92664`	`4281324`	`94420884`
					`-72`	`-6192`	`-197712`	`-19657152`	`-918735192`
						`2160`	`187920`	`41707440`	`4169709360`
							`-64800`	`-39528000`	`-8798090400`
								`13608000`	`8314488000`
									`-2857680000`

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Last modified April 19 23:40 EDT 2024. Contains 371798 sequences. (Running on oeis4.)