A154556 - OEIS

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A154556 as a triangular array

1

-1 1

1 -1 1

-1 0 0 1

1 2 -3 2 1

-1 -5 5 -5 5 1

1 9 0 -5 0 9 1

-1 -14 -21 35 -35 21 14 1

1 20 70 -56 35 -56 70 20 1

-1 -27 -162 -42 189 -189 42 162 27 1

A154556 as a square array

`1`	`-1`	`1`	`-1`	`1`	`-1`	`1`	`-1`	`1`	`-1`
`1`	`-1`	`0`	`2`	`-5`	`9`	`-14`	`20`	`-27`
`1`	`0`	`-3`	`5`	`0`	`-21`	`70`	`-162`
`1`	`2`	`-5`	`-5`	`35`	`-56`	`-42`
`1`	`5`	`0`	`-35`	`35`	`189`
`1`	`9`	`21`	`-56`	`-189`
`1`	`14`	`70`	`42`
`1`	`20`	`162`
`1`	`27`
`1`

A154556 as an upper right triangle

`1`	`-1`	`1`	`-1`	`1`	`-1`	`1`	`-1`	`1`	`-1`
	`1`	`-1`	`0`	`2`	`-5`	`9`	`-14`	`20`	`-27`
		`1`	`0`	`-3`	`5`	`0`	`-21`	`70`	`-162`
			`1`	`2`	`-5`	`-5`	`35`	`-56`	`-42`
				`1`	`5`	`0`	`-35`	`35`	`189`
					`1`	`9`	`21`	`-56`	`-189`
						`1`	`14`	`70`	`42`
							`1`	`20`	`162`
								`1`	`27`
									`1`

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Last modified May 21 22:15 EDT 2024. Contains 372739 sequences. (Running on oeis4.)