A101980 - OEIS

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

A101980 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`0`
`3`		`-1`
`4`		`4`
`5`		`0`
`6`		`4`
`7`		`-9`
`8`		`9`
`9`		`0`
`10`		`-33`
`11`		`64`
`12`		`-36`
`13`		`16`
`14`		`0`
`15`		`456`
`16`		`-825`
`17`		`400`
`18`		`-100`
`19`		`25`
`20`		`0`
`21`		`-9460`
`22`		`16416`
`23`		`-7425`
`24`		`1600`
`25`		`-225`
`26`		`36`
`27`		`0`
`28`		`274800`
`29`		`-463540`
`30`		`201096`
`31`		`-40425`
`32`		`4900`
`33`		`-441`
`34`		`49`
`35`		`0`
`36`		`-10643745`
`37`		`17587200`
`38`		`-7416640`
`39`		`1430016`
`40`		`-161700`
`41`		`12544`
`42`		`-784`
`43`		`64`
`44`		`0`
`45`		`530052880`
`46`		`-862143345`
`47`		`356140800`
`48`		`-66749760`
`49`		`7239456`

[0,1,0,-1,4,0,4,-9,9,0,-33,64,-36,16,0,456,-825, 400,-100,25,0,-9460,16416,-7425,1600,-225,36,0, 274800,-463540,201096,-40425,4900,-441,49,0, -10643745,17587200,-7416640,1430016,-161700,12544, -784,64,0,530052880,-862143345,356140800, -66749760,7239456]

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 30 18:15 EDT 2024. Contains 373877 sequences. (Running on oeis4.)