A020470 - OEIS

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A020470 as a simple table

`n`		`a(n)`
`1`		`7`
`2`		`787`
`3`		`877`
`4`		`887`
`5`		`7877`
`6`		`8887`
`7`		`78787`
`8`		`78877`
`9`		`78887`
`10`		`87877`
`11`		`87887`
`12`		`777787`
`13`		`777877`
`14`		`778777`
`15`		`787777`
`16`		`878777`
`17`		`888887`
`18`		`7778777`
`19`		`7788787`
`20`		`7877777`
`21`		`7878877`
`22`		`7878887`
`23`		`7888877`
`24`		`8787887`
`25`		`8788777`
`26`		`8877787`
`27`		`8887777`
`28`		`77778887`
`29`		`77787887`
`30`		`77877887`

[7,787,877,887,7877,8887,78787,78877,78887,87877, 87887,777787,777877,778777,787777,878777,888887, 7778777,7788787,7877777,7878877,7878887,7888877, 8787887,8788777,8877787,8887777,77778887,77787887, 77877887]

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)