A087854 - OEIS

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A087854 as a triangular array

1

1 1

1 2 2

1 4 9 6

1 6 30 48 24

1 12 91 260 300 120

1 18 258 1200 2400 2160 720

1 34 729 5106 15750 23940 17640 5040

1 58 2018 20720 92680 211680 258720 161280 40320

1 106 5613 81876 510312 1643544 2963520 3024000 1632960 362880

A087854 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`2`	`4`	`6`	`12`	`18`	`34`	`58`	`106`
`2`	`9`	`30`	`91`	`258`	`729`	`2018`	`5613`
`6`	`48`	`260`	`1200`	`5106`	`20720`	`81876`
`24`	`300`	`2400`	`15750`	`92680`	`510312`
`120`	`2160`	`23940`	`211680`	`1643544`
`720`	`17640`	`258720`	`2963520`
`5040`	`161280`	`3024000`
`40320`	`1632960`
`362880`

A087854 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`2`	`4`	`6`	`12`	`18`	`34`	`58`	`106`
		`2`	`9`	`30`	`91`	`258`	`729`	`2018`	`5613`
			`6`	`48`	`260`	`1200`	`5106`	`20720`	`81876`
				`24`	`300`	`2400`	`15750`	`92680`	`510312`
					`120`	`2160`	`23940`	`211680`	`1643544`
						`720`	`17640`	`258720`	`2963520`
							`5040`	`161280`	`3024000`
								`40320`	`1632960`
									`362880`

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Last modified April 24 14:09 EDT 2024. Contains 371960 sequences. (Running on oeis4.)