A156815 - OEIS

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A156815 as a triangular array

1

0 1

0 1 2

0 2 6 6

0 6 28 36 24

0 24 180 300 240 120

0 120 1488 3240 3120 1800 720

0 720 15120 43344 50400 33600 15120 5040

0 5040 182880 695520 979776 756000 383040 141120 40320

0 40320 2570400 13068000 22377600 20018880 11430720 4656960 1451520 362880

A156815 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`
`2`	`6`	`28`	`180`	`1488`	`15120`	`182880`	`2570400`
`6`	`36`	`300`	`3240`	`43344`	`695520`	`13068000`
`24`	`240`	`3120`	`50400`	`979776`	`22377600`
`120`	`1800`	`33600`	`756000`	`20018880`
`720`	`15120`	`383040`	`11430720`
`5040`	`141120`	`4656960`
`40320`	`1451520`
`362880`

A156815 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`
		`2`	`6`	`28`	`180`	`1488`	`15120`	`182880`	`2570400`
			`6`	`36`	`300`	`3240`	`43344`	`695520`	`13068000`
				`24`	`240`	`3120`	`50400`	`979776`	`22377600`
					`120`	`1800`	`33600`	`756000`	`20018880`
						`720`	`15120`	`383040`	`11430720`
							`5040`	`141120`	`4656960`
								`40320`	`1451520`
									`362880`

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Last modified April 24 07:06 EDT 2024. Contains 371920 sequences. (Running on oeis4.)