A028860 - OEIS

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

A028860 as a simple table

`n`		`a(n)`
`0`		`-1`
`1`		`1`
`2`		`0`
`3`		`2`
`4`		`4`
`5`		`12`
`6`		`32`
`7`		`88`
`8`		`240`
`9`		`656`
`10`		`1792`
`11`		`4896`
`12`		`13376`
`13`		`36544`
`14`		`99840`
`15`		`272768`
`16`		`745216`
`17`		`2035968`
`18`		`5562368`
`19`		`15196672`
`20`		`41518080`
`21`		`113429504`
`22`		`309895168`
`23`		`846649344`
`24`		`2313089024`
`25`		`6319476736`
`26`		`17265131520`
`27`		`47169216512`
`28`		`128868696064`
`29`		`352075825152`
`30`		`961889042432`
`31`		`2627929735168`

[-1,1,0,2,4,12,32,88,240,656,1792,4896,13376, 36544,99840,272768,745216,2035968,5562368, 15196672,41518080,113429504,309895168,846649344, 2313089024,6319476736,17265131520,47169216512, 128868696064,352075825152,961889042432, 2627929735168]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 8 19:26 EDT 2024. Contains 372341 sequences. (Running on oeis4.)