A055392 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A055392 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`0`
`3`		`2`
`4`		`1`
`5`		`12`
`6`		`14`
`7`		`100`
`8`		`180`
`9`		`990`
`10`		`2310`
`11`		`10920`
`12`		`30030`
`13`		`129612`
`14`		`396576`
`15`		`1620168`
`16`		`5318841`
`17`		`21029580`
`18`		`72364578`
`19`		`280735884`
`20`		`997356360`
`21`		`3828988020`
`22`		`13905563100`
`23`		`53108050320`
`24`		`195875639310`
`25`		`746569720572`
`26`		`2784329809344`
`27`		`10610782107800`

[1,0,2,1,12,14,100,180,990,2310,10920,30030, 129612,396576,1620168,5318841,21029580,72364578, 280735884,997356360,3828988020,13905563100, 53108050320,195875639310,746569720572, 2784329809344,10610782107800]

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 25 12:21 EDT 2024. Contains 374588 sequences. (Running on oeis4.)