A055135 - OEIS

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A055135 as a triangular array

1

0 1

-1 -2 1

-2 0 -6 1

-3 0 18 -12 1

-4 0 -40 80 -20 1

-5 0 75 -400 225 -30 1

-6 0 -126 1680 -1890 504 -42 1

-7 0 196 -6272 13230 -6272 980 -56 1

-8 0 -288 21504 -81648 64512 -16800 1728 -72 1

-9 0 405

A055135 as a square array

`1`	`0`	`-1`	`-2`	`-3`	`-4`	`-5`	`-6`	`-7`	`-8`	`-9`
`1`	`-2`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`-6`	`18`	`-40`	`75`	`-126`	`196`	`-288`	`405`
`1`	`-12`	`80`	`-400`	`1680`	`-6272`	`21504`
`1`	`-20`	`225`	`-1890`	`13230`	`-81648`
`1`	`-30`	`504`	`-6272`	`64512`
`1`	`-42`	`980`	`-16800`
`1`	`-56`	`1728`
`1`	`-72`
`1`

A055135 as an upper right triangle

`1`	`0`	`-1`	`-2`	`-3`	`-4`	`-5`	`-6`	`-7`	`-8`	`-9`
	`1`	`-2`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
		`1`	`-6`	`18`	`-40`	`75`	`-126`	`196`	`-288`	`405`
			`1`	`-12`	`80`	`-400`	`1680`	`-6272`	`21504`
				`1`	`-20`	`225`	`-1890`	`13230`	`-81648`
					`1`	`-30`	`504`	`-6272`	`64512`
						`1`	`-42`	`980`	`-16800`
							`1`	`-56`	`1728`
								`1`	`-72`
									`1`

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Last modified August 22 23:56 EDT 2024. Contains 375369 sequences. (Running on oeis4.)