A208581 - OEIS

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A208581 as a triangular array

1

2 2

5 12 5

15 152 159 15

52 3024 15215 3233 52

203 84124 2946848 3012383 90863 203

877 3057664 960563033 7289707650 992352688 3319375 877

4140 139056380 474608323506 35787552851324 36182978136598

A208581 as a square array

`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
`2`	`12`	`152`	`3024`	`84124`	`3057664`	`139056380`
`5`	`159`	`15215`	`2946848`	`960563033`	`474608323506`
`15`	`3233`	`3012383`	`7289707650`	`35787552851324`
`52`	`90863`	`992352688`	`36182978136598`
`203`	`3319375`
`877`

A208581 as an upper right triangle

`1`	`2`	`5`	`15`	`52`	`203`	`877`	`4140`
	`2`	`12`	`152`	`3024`	`84124`	`3057664`	`139056380`
		`5`	`159`	`15215`	`2946848`	`960563033`	`474608323506`
			`15`	`3233`	`3012383`	`7289707650`	`35787552851324`
				`52`	`90863`	`992352688`	`36182978136598`
					`203`	`3319375`
						`877`

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Last modified May 2 09:21 EDT 2024. Contains 372179 sequences. (Running on oeis4.)