A199683 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A199683 as a simple table

`n`		`a(n)`
`0`		`4`
`1`		`31`
`2`		`301`
`3`		`3001`
`4`		`30001`
`5`		`300001`
`6`		`3000001`
`7`		`30000001`
`8`		`300000001`
`9`		`3000000001`
`10`		`30000000001`
`11`		`300000000001`
`12`		`3000000000001`
`13`		`30000000000001`
`14`		`300000000000001`
`15`		`3000000000000001`
`16`		`30000000000000001`
`17`		`300000000000000001`
`18`		`3000000000000000001`

[4,31,301,3001,30001,300001,3000001,30000001, 300000001,3000000001,30000000001,300000000001, 3000000000001,30000000000001,300000000000001, 3000000000000001,30000000000000001, 300000000000000001,3000000000000000001]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)