A260687 - OEIS

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A260687 as a triangular array

1

2 2

6 15 9

24 104 144 64

120 770 1775 1750 625

720 6264 20880 33480 25920 7776

5040 56196 250096 571095 708295 453789 117649

40320 554112 3127040 9433088 16486400 16744448 9175040 2097152

362880 5973264 41229324 156498804

A260687 as a square array

`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`	`362880`
`2`	`15`	`104`	`770`	`6264`	`56196`	`554112`	`5973264`
`9`	`144`	`1775`	`20880`	`250096`	`3127040`	`41229324`
`64`	`1750`	`33480`	`571095`	`9433088`	`156498804`
`625`	`25920`	`708295`	`16486400`
`7776`	`453789`	`16744448`
`117649`	`9175040`
`2097152`

A260687 as an upper right triangle

`1`	`2`	`6`	`24`	`120`	`720`	`5040`	`40320`	`362880`
	`2`	`15`	`104`	`770`	`6264`	`56196`	`554112`	`5973264`
		`9`	`144`	`1775`	`20880`	`250096`	`3127040`	`41229324`
			`64`	`1750`	`33480`	`571095`	`9433088`	`156498804`
				`625`	`25920`	`708295`	`16486400`
					`7776`	`453789`	`16744448`
						`117649`	`9175040`
							`2097152`

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Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)