A098434 - OEIS

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A098434 as a triangular array

1

2 -1

3 -3 0

4 -6 0 1

5 -10 0 5 0

6 -15 0 15 0 -3

7 -21 0 35 0 -21 0

8 -28 0 70 0 -84 0 17

9 -36 0 126 0 -252 0 153 0

10 -45 0 210 0 -630 0 765 0 -155

11 -55 0 330 0 -1386 0 2805 0 -1705 0

12 -66 0 495

A098434 as a square array

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
`-1`	`-3`	`-6`	`-10`	`-15`	`-21`	`-28`	`-36`	`-45`	`-55`	`-66`
`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`	`495`
`0`	`0`	`0`	`0`	`0`	`0`	`0`
`-3`	`-21`	`-84`	`-252`	`-630`	`-1386`
`0`	`0`	`0`	`0`	`0`
`17`	`153`	`765`	`2805`
`0`	`0`	`0`
`-155`	`-1705`
`0`

A098434 as an upper right triangle

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
	`-1`	`-3`	`-6`	`-10`	`-15`	`-21`	`-28`	`-36`	`-45`	`-55`	`-66`
		`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
			`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`	`495`
				`0`	`0`	`0`	`0`	`0`	`0`	`0`
					`-3`	`-21`	`-84`	`-252`	`-630`	`-1386`
						`0`	`0`	`0`	`0`	`0`
							`17`	`153`	`765`	`2805`
								`0`	`0`	`0`
									`-155`	`-1705`
										`0`

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Last modified May 10 07:40 EDT 2024. Contains 372358 sequences. (Running on oeis4.)