A154559 - OEIS

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A154559 as a triangular array

1

2 0

3 2 0

4 6 4 0

5 12 16 9 0

6 20 40 45 21 0

7 30 80 135 126 51 0

8 42 140 315 441 357 127 0

9 56 224 630 1176 1428 1016 323 0

10 72 336 1134 2646 4284 4572 2907 835 0

A154559 as a square array

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
`0`	`2`	`6`	`12`	`20`	`30`	`42`	`56`	`72`
`0`	`4`	`16`	`40`	`80`	`140`	`224`	`336`
`0`	`9`	`45`	`135`	`315`	`630`	`1134`
`0`	`21`	`126`	`441`	`1176`	`2646`
`0`	`51`	`357`	`1428`	`4284`
`0`	`127`	`1016`	`4572`
`0`	`323`	`2907`
`0`	`835`
`0`

A154559 as an upper right triangle

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`
	`0`	`2`	`6`	`12`	`20`	`30`	`42`	`56`	`72`
		`0`	`4`	`16`	`40`	`80`	`140`	`224`	`336`
			`0`	`9`	`45`	`135`	`315`	`630`	`1134`
				`0`	`21`	`126`	`441`	`1176`	`2646`
					`0`	`51`	`357`	`1428`	`4284`
						`0`	`127`	`1016`	`4572`
							`0`	`323`	`2907`
								`0`	`835`
									`0`

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Last modified April 30 11:22 EDT 2024. Contains 372131 sequences. (Running on oeis4.)