A020509 - OEIS

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A020509 as a simple table

`n`		`a(n)`
`0`		`-10`
`1`		`-11`
`2`		`-9`
`3`		`91`
`4`		`101`
`5`		`9091`
`6`		`111`
`7`		`909091`
`8`		`10001`
`9`		`999001`
`10`		`11111`
`11`		`9090909091`
`12`		`9901`
`13`		`909090909091`
`14`		`1111111`
`15`		`109889011`
`16`		`100000001`
`17`		`9090909090909091`
`18`		`1001001`
`19`		`909090909090909091`
`20`		`99009901`
`21`		`1098900989011`
`22`		`11111111111`

[-10,-11,-9,91,101,9091,111,909091,10001,999001, 11111,9090909091,9901,909090909091,1111111, 109889011,100000001,9090909090909091,1001001, 909090909090909091,99009901,1098900989011, 11111111111]

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Last modified August 8 12:42 EDT 2024. Contains 375021 sequences. (Running on oeis4.)