A308460 - OEIS

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A308460 as a triangular array

1

1 0

1 1 0

1 2 4 0

1 3 20 38 0

1 4 54 624 728 0

1 5 112 3834 55248 26704 0

1 6 200 15104 1027080 13982208 1866256 0

1 7 324 45750 9684224 1067308488 10358360640 251548592 0

1 8 490 116208 60225000 30458183680 4390480193904 22792648882176 66296291072 0

A308460 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`0`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`
`0`	`4`	`20`	`54`	`112`	`200`	`324`	`490`
`0`	`38`	`624`	`3834`	`15104`	`45750`	`116208`
`0`	`728`	`55248`	`1027080`	`9684224`	`60225000`
`0`	`26704`	`13982208`	`1067308488`	`30458183680`
`0`	`1866256`	`10358360640`	`4390480193904`
`0`	`251548592`	`22792648882176`
`0`	`66296291072`
`0`

A308460 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`0`	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`
		`0`	`4`	`20`	`54`	`112`	`200`	`324`	`490`
			`0`	`38`	`624`	`3834`	`15104`	`45750`	`116208`
				`0`	`728`	`55248`	`1027080`	`9684224`	`60225000`
					`0`	`26704`	`13982208`	`1067308488`	`30458183680`
						`0`	`1866256`	`10358360640`	`4390480193904`
							`0`	`251548592`	`22792648882176`
								`0`	`66296291072`
									`0`

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Last modified April 17 22:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)