A004992 - OEIS

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A004992 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`15`
`2`		`180`
`3`		`1980`
`4`		`20790`
`5`		`212058`
`6`		`2120580`
`7`		`20902860`
`8`		`203802885`
`9`		`1970094555`
`10`		`18912907728`
`11`		`180532301040`
`12`		`1715056859880`
`13`		`16227076443480`
`14`		`152998149324240`
`15`		`1438182603647856`
`16`		`13482961909198650`
`17`		`126105349621328550`
`18`		`1176983263132399800`
`19`		`10964528293391303400`
`20`		`101970113128539121620`

[1,15,180,1980,20790,212058,2120580,20902860, 203802885,1970094555,18912907728,180532301040, 1715056859880,16227076443480,152998149324240, 1438182603647856,13482961909198650, 126105349621328550,1176983263132399800, 10964528293391303400,101970113128539121620]

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Last modified June 11 07:51 EDT 2024. Contains 373291 sequences. (Running on oeis4.)