A020452 - OEIS

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

A020452 as a simple table

`n`		`a(n)`
`1`		`11`
`2`		`41`
`3`		`4111`
`4`		`4441`
`5`		`11411`
`6`		`14411`
`7`		`41141`
`8`		`41411`
`9`		`44111`
`10`		`1114111`
`11`		`1144141`
`12`		`1144441`
`13`		`1411141`
`14`		`1411411`
`15`		`1441411`
`16`		`1444111`
`17`		`1444411`
`18`		`1444441`
`19`		`4141441`
`20`		`4414411`
`21`		`4441111`
`22`		`4441441`
`23`		`11111141`
`24`		`11141111`
`25`		`11141441`
`26`		`11441141`
`27`		`11441411`
`28`		`14111441`
`29`		`14141411`

[11,41,4111,4441,11411,14411,41141,41411,44111, 1114111,1144141,1144441,1411141,1411411,1441411, 1444111,1444411,1444441,4141441,4414411,4441111, 4441441,11111141,11141111,11141441,11441141, 11441411,14111441,14141411]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)