A003446 - OEIS

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A003446 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`6`
`5`		`16`
`6`		`52`
`7`		`170`
`8`		`579`
`9`		`1996`
`10`		`7021`
`11`		`24892`
`12`		`89214`
`13`		`321994`
`14`		`1170282`
`15`		`4277352`
`16`		`15715249`
`17`		`57999700`
`18`		`214939846`
`19`		`799478680`
`20`		`2983699498`
`21`		`11169391168`
`22`		`41929537871`
`23`		`157807451672`
`24`		`595340479694`
`25`		`2250901216266`
`26`		`8527700012092`
`27`		`32369067177176`

[0,1,1,2,6,16,52,170,579,1996,7021,24892,89214, 321994,1170282,4277352,15715249,57999700, 214939846,799478680,2983699498,11169391168, 41929537871,157807451672,595340479694, 2250901216266,8527700012092,32369067177176]

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Last modified May 21 00:23 EDT 2013. Contains 225465 sequences.