A007558 - OEIS

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A007558 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`4`
`5`		`10`
`6`		`30`
`7`		`100`
`8`		`380`
`9`		`1600`
`10`		`7400`
`11`		`37400`
`12`		`204600`
`13`		`1205600`
`14`		`7612000`
`15`		`51260000`
`16`		`366784000`
`17`		`2778820000`
`18`		`22222332000`
`19`		`187067320000`
`20`		`1653461480000`
`21`		`15310662400000`
`22`		`148217381840000`
`23`		`1497226615280000`
`24`		`15754506226800000`
`25`		`172407188412800000`

[1,1,1,2,4,10,30,100,380,1600,7400,37400,204600, 1205600,7612000,51260000,366784000,2778820000, 22222332000,187067320000,1653461480000, 15310662400000,148217381840000,1497226615280000, 15754506226800000,172407188412800000]

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)