A012771 - OEIS

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A012771 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`3`
`4`		`9`
`5`		`25`
`6`		`105`
`7`		`371`
`8`		`1393`
`9`		`11985`
`10`		`71025`
`11`		`-13981`
`12`		`-898887`
`13`		`45127017`
`14`		`455252889`
`15`		`-5553908333`
`16`		`-75822681503`
`17`		`1415759895841`
`18`		`21366754787169`
`19`		`-404022487469117`
`20`		`-7036035942040855`
`21`		`148035510590478137`

[1,1,1,3,9,25,105,371,1393,11985,71025,-13981, -898887,45127017,455252889,-5553908333, -75822681503,1415759895841,21366754787169, -404022487469117,-7036035942040855, 148035510590478137]

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Last modified September 13 20:16 EDT 2024. Contains 375910 sequences. (Running on oeis4.)