A138740 - OEIS

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A138740 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`-2`
`4`		`9`
`5`		`-56`
`6`		`420`
`7`		`-3572`
`8`		`33328`
`9`		`-334354`
`10`		`3559310`
`11`		`-39838760`
`12`		`465743720`
`13`		`-5658983108`
`14`		`71191948512`
`15`		`-924554859776`
`16`		`12365546196641`
`17`		`-169995491295312`
`18`		`2398380272232272`
`19`		`-34680290150700800`
`20`		`513390937937217088`
`21`		`-7773229533145403728`

[1,1,-2,9,-56,420,-3572,33328,-334354,3559310, -39838760,465743720,-5658983108,71191948512, -924554859776,12365546196641,-169995491295312, 2398380272232272,-34680290150700800, 513390937937217088,-7773229533145403728]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)