A026559 - OEIS

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A026559 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`12`
`4`		`45`
`5`		`180`
`6`		`721`
`7`		`2940`
`8`		`12069`
`9`		`49935`
`10`		`207691`
`11`		`867900`
`12`		`3640429`
`13`		`15319395`
`14`		`64643580`
`15`		`273431408`
`16`		`1158988141`
`17`		`4921651521`
`18`		`20934115963`
`19`		`89173404140`
`20`		`380355072153`
`21`		`1624282578215`
`22`		`6943928981859`
`23`		`29715239620368`
`24`		`127276313406125`
`25`		`545605497876400`
`26`		`2340694589348376`
`27`		`10048952593607088`
`28`		`43170264470594302`

[1,3,12,45,180,721,2940,12069,49935,207691,867900, 3640429,15319395,64643580,273431408,1158988141, 4921651521,20934115963,89173404140,380355072153, 1624282578215,6943928981859,29715239620368, 127276313406125,545605497876400,2340694589348376, 10048952593607088,43170264470594302]

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Last modified April 25 13:38 EDT 2024. Contains 371970 sequences. (Running on oeis4.)