A331955 - OEIS

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A331955 as a triangular array

1

0 1

0 2 1

0 5 7 3

0 15 45 49 18

0 52 306 640 565 180

0 203 2268 8176 13055 9645 2700

0 877 18425 108388 279349 359555 227745 56700

0 4140 163754 1523922 5967927 11918270 12822110 7095060 1587600

A331955 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
`1`	`7`	`45`	`306`	`2268`	`18425`	`163754`
`3`	`49`	`640`	`8176`	`108388`	`1523922`
`18`	`565`	`13055`	`279349`	`5967927`
`180`	`9645`	`359555`	`11918270`
`2700`	`227745`	`12822110`
`56700`	`7095060`
`1587600`

A331955 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
		`1`	`7`	`45`	`306`	`2268`	`18425`	`163754`
			`3`	`49`	`640`	`8176`	`108388`	`1523922`
				`18`	`565`	`13055`	`279349`	`5967927`
					`180`	`9645`	`359555`	`11918270`
						`2700`	`227745`	`12822110`
							`56700`	`7095060`
								`1587600`

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Last modified April 25 05:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)