A156991 - OEIS

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A156991 as a triangular array

1

0 1

0 2 6

0 6 24 60

0 24 120 360 840

0 120 720 2520 6720 15120

0 720 5040 20160 60480 151200 332640

0 5040 40320 181440 604800 1663200 3991680 8648640

0 40320 362880 1814400 6652800 19958400 51891840 121080960 259459200

A156991 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`
`6`	`24`	`120`	`720`	`5040`	`40320`	`362880`
`60`	`360`	`2520`	`20160`	`181440`	`1814400`
`840`	`6720`	`60480`	`604800`	`6652800`
`15120`	`151200`	`1663200`	`19958400`
`332640`	`3991680`	`51891840`
`8648640`	`121080960`
`259459200`

A156991 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`
		`6`	`24`	`120`	`720`	`5040`	`40320`	`362880`
			`60`	`360`	`2520`	`20160`	`181440`	`1814400`
				`840`	`6720`	`60480`	`604800`	`6652800`
					`15120`	`151200`	`1663200`	`19958400`
						`332640`	`3991680`	`51891840`
							`8648640`	`121080960`
								`259459200`

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Last modified May 21 03:54 EDT 2024. Contains 372720 sequences. (Running on oeis4.)