A203646 - OEIS

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A203646 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`5`
`4`		`15`
`5`		`52`
`6`		`203`
`7`		`877`
`8`		`4140`
`9`		`21147`
`10`		`115975`
`11`		`678570`
`12`		`4213597`
`13`		`27644437`
`14`		`190899322`
`15`		`1382958545`
`16`		`10480142147`
`17`		`82864869803`
`18`		`682076806005`
`19`		`5832742192288`
`20`		`51724157478221`
`21`		`474869780161021`
`22`		`4506714279517080`
`23`		`44151953491540255`

[1,2,5,15,52,203,877,4140,21147,115975,678570, 4213597,27644437,190899322,1382958545,10480142147, 82864869803,682076806005,5832742192288, 51724157478221,474869780161021,4506714279517080, 44151953491540255]

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Last modified May 25 20:22 EDT 2013. Contains 225649 sequences.