A180116 - OEIS

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A180116 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`33`
`4`		`55`
`5`		`555`
`6`		`777`
`7`		`7777`
`8`		`9999`
`9`		`99999`
`10`		`1111111111`
`11`		`111111111111`
`12`		`131313131313`
`13`		`13131313131313`
`14`		`15151515151515`
`15`		`1515151515151515`
`16`		`1717171717171717`
`17`		`171717171717171717`
`18`		`191919191919191919`
`19`		`19191919191919191919`
`20`		`21212121212121212121`
`21`		`2121212121212121212121`

[1,3,33,55,555,777,7777,9999,99999,1111111111, 111111111111,131313131313,13131313131313, 15151515151515,1515151515151515,1717171717171717, 171717171717171717,191919191919191919, 19191919191919191919,21212121212121212121, 2121212121212121212121]

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Last modified April 26 06:36 EDT 2024. Contains 371990 sequences. (Running on oeis4.)