A331956 - OEIS

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A331956 as a triangular array

1

0 1

0 1 1

0 1 4 3

0 1 14 31 18

0 1 51 255 385 180

0 1 202 2066 6110 6945 2700

0 1 876 17549 90839 188510 171045 56700

0 1 4139 159615 1364307 4603620 7314650 5507460 1587600

A331956 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`4`	`14`	`51`	`202`	`876`	`4139`
`3`	`31`	`255`	`2066`	`17549`	`159615`
`18`	`385`	`6110`	`90839`	`1364307`
`180`	`6945`	`188510`	`4603620`
`2700`	`171045`	`7314650`
`56700`	`5507460`
`1587600`

A331956 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
		`1`	`4`	`14`	`51`	`202`	`876`	`4139`
			`3`	`31`	`255`	`2066`	`17549`	`159615`
				`18`	`385`	`6110`	`90839`	`1364307`
					`180`	`6945`	`188510`	`4603620`
						`2700`	`171045`	`7314650`
							`56700`	`5507460`
								`1587600`

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Last modified August 26 07:40 EDT 2024. Contains 375454 sequences. (Running on oeis4.)