A000305 - OEIS

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A000305 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`18`
`4`		`89`
`5`		`466`
`6`		`2537`
`7`		`14209`
`8`		`81316`
`9`		`473338`
`10`		`2793454`
`11`		`16674417`
`12`		`100487896`
`13`		`610549829`
`14`		`3735850007`
`15`		`23000055178`
`16`		`142370597601`
`17`		`885521350882`
`18`		`5531501612071`
`19`		`34686798239678`
`20`		`218273864005214`
`21`		`1377897874711437`

[1,4,18,89,466,2537,14209,81316,473338,2793454, 16674417,100487896,610549829,3735850007, 23000055178,142370597601,885521350882, 5531501612071,34686798239678,218273864005214, 1377897874711437]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)