A021764 - OEIS

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A021764 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`18`
`2`		`215`
`3`		`2160`
`4`		`19821`
`5`		`172638`
`6`		`1456915`
`7`		`12056220`
`8`		`98541641`
`9`		`799142058`
`10`		`6448579215`
`11`		`51871439880`
`12`		`416407919461`
`13`		`3338534836278`
`14`		`26744994007115`
`15`		`214144960297140`
`16`		`1714090450201281`
`17`		`13717400347223298`
`18`		`109762678131820615`

[1,18,215,2160,19821,172638,1456915,12056220, 98541641,799142058,6448579215,51871439880, 416407919461,3338534836278,26744994007115, 214144960297140,1714090450201281, 13717400347223298,109762678131820615]

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Last modified April 19 14:10 EDT 2024. Contains 371792 sequences. (Running on oeis4.)