A005770 - OEIS

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A005770 as a simple table

`n`		`a(n)`
`5`		`1`
`6`		`9`
`7`		`55`
`8`		`286`
`9`		`1362`
`10`		`6143`
`11`		`26729`
`12`		`113471`
`13`		`473471`
`14`		`1951612`
`15`		`7974660`
`16`		`32384127`
`17`		`130926391`
`18`		`527657073`
`19`		`2121795391`
`20`		`8518575466`
`21`		`34162154550`
`22`		`136893468863`
`23`		`548253828965`
`24`		`2194897467395`
`25`		`8784784672511`
`26`		`35153438973304`
`27`		`140653028240520`
`28`		`562719731644671`

[1,9,55,286,1362,6143,26729,113471,473471,1951612, 7974660,32384127,130926391,527657073,2121795391, 8518575466,34162154550,136893468863,548253828965, 2194897467395,8784784672511,35153438973304, 140653028240520,562719731644671]

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Last modified April 19 06:44 EDT 2024. Contains 371782 sequences. (Running on oeis4.)