A007907 - OEIS

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A007907 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`11`
`3`		`121`
`4`		`1221`
`5`		`12321`
`6`		`123321`
`7`		`1234321`
`8`		`12344321`
`9`		`123454321`
`10`		`1234554321`
`11`		`12345654321`
`12`		`123456654321`
`13`		`1234567654321`
`14`		`12345677654321`
`15`		`123456787654321`
`16`		`1234567887654321`
`17`		`12345678987654321`

[1,11,121,1221,12321,123321,1234321,12344321, 123454321,1234554321,12345654321,123456654321, 1234567654321,12345677654321,123456787654321, 1234567887654321,12345678987654321]

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Last modified April 24 06:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)