A013155 - OEIS

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A013155 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`3`
`3`		`6`
`4`		`21`
`5`		`90`
`6`		`495`
`7`		`3150`
`8`		`23625`
`9`		`198450`
`10`		`1885275`
`11`		`19646550`
`12`		`225935325`
`13`		`2809456650`
`14`		`37927664775`
`15`		`547844046750`
`16`		`8491582724625`
`17`		`139700231921250`
`18`		`2444754058621875`
`19`		`45123174910563750`
`20`		`879901910755993125`
`21`		`18004146789314936250`
`22`		`387089155970271129375`
`23`		`8696002899239114208750`

[1,2,3,6,21,90,495,3150,23625,198450,1885275, 19646550,225935325,2809456650,37927664775, 547844046750,8491582724625,139700231921250, 2444754058621875,45123174910563750, 879901910755993125,18004146789314936250, 387089155970271129375,8696002899239114208750]

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Last modified May 16 15:45 EDT 2024. Contains 372554 sequences. (Running on oeis4.)