A199890 - OEIS

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A199890 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`6`
`5`		`4`
`6`		`15`
`7`		`37`
`8`		`81`
`9`		`133`
`10`		`270`
`11`		`565`
`12`		`1200`
`13`		`2449`
`14`		`4961`
`15`		`10014`
`16`		`20083`
`17`		`39585`
`18`		`77566`
`19`		`152934`
`20`		`305587`
`21`		`617857`
`22`		`1257333`
`23`		`2558837`
`24`		`5180712`
`25`		`10404918`
`26`		`20732162`
`27`		`41087390`
`28`		`81291644`
`29`		`161136101`
`30`		`320733232`
`31`		`641408052`
`32`		`1287453960`
`33`		`2589099670`
`34`		`5207066575`
`35`		`10459270462`

[1,1,1,6,4,15,37,81,133,270,565,1200,2449,4961, 10014,20083,39585,77566,152934,305587,617857, 1257333,2558837,5180712,10404918,20732162, 41087390,81291644,161136101,320733232,641408052, 1287453960,2589099670,5207066575,10459270462]

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Last modified December 1 14:40 EST 2023. Contains 367476 sequences. (Running on oeis4.)