A001880 - OEIS

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A001880 as a simple table

`n`		`a(n)`
`4`		`1`
`5`		`15`
`6`		`210`
`7`		`3150`
`8`		`51975`
`9`		`945945`
`10`		`18918900`
`11`		`413513100`
`12`		`9820936125`
`13`		`252070693875`
`14`		`6957151150950`
`15`		`205552193096250`
`16`		`6474894082531875`
`17`		`216659917377028125`
`18`		`7675951358500425000`
`19`		`287080580807915895000`
`20`		`11303797869311688365625`
`21`		`467445288360359818884375`

[1,15,210,3150,51975,945945,18918900,413513100, 9820936125,252070693875,6957151150950, 205552193096250,6474894082531875, 216659917377028125,7675951358500425000, 287080580807915895000,11303797869311688365625, 467445288360359818884375]

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Last modified April 18 10:46 EDT 2024. Contains 371779 sequences. (Running on oeis4.)