A267981 - OEIS

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A267981 as a simple table

`n`		`a(n)`
`0`		`2`
`1`		`6`
`2`		`40`
`3`		`350`
`4`		`3528`
`5`		`38808`
`6`		`453024`
`7`		`5521230`
`8`		`69526600`
`9`		`898283672`
`10`		`11848435872`
`11`		`158966514616`
`12`		`2163449607200`
`13`		`29802622140000`
`14`		`414852500188800`
`15`		`5827381213589550`
`16`		`82510878636707400`
`17`		`1176544010190087000`
`18`		`16882265852589060000`
`19`		`243611096252860135800`

[2,6,40,350,3528,38808,453024,5521230,69526600, 898283672,11848435872,158966514616,2163449607200, 29802622140000,414852500188800,5827381213589550, 82510878636707400,1176544010190087000, 16882265852589060000,243611096252860135800]

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Last modified September 8 09:26 EDT 2024. Contains 375753 sequences. (Running on oeis4.)