A020455 - OEIS

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A020455 as a simple table

`n`		`a(n)`
`1`		`7`
`2`		`11`
`3`		`17`
`4`		`71`
`5`		`1117`
`6`		`1171`
`7`		`1777`
`8`		`7177`
`9`		`7717`
`10`		`11117`
`11`		`11171`
`12`		`11177`
`13`		`11717`
`14`		`11777`
`15`		`17117`
`16`		`71171`
`17`		`71711`
`18`		`71777`
`19`		`77171`
`20`		`77711`
`21`		`1111711`
`22`		`1111771`
`23`		`1117111`
`24`		`1117117`
`25`		`1117177`
`26`		`1171111`
`27`		`1171117`
`28`		`1171771`
`29`		`1177171`
`30`		`1177711`
`31`		`1177717`
`32`		`1711117`
`33`		`1717117`
`34`		`1771177`
`35`		`1771717`

[7,11,17,71,1117,1171,1777,7177,7717,11117,11171, 11177,11717,11777,17117,71171,71711,71777,77171, 77711,1111711,1111771,1117111,1117117,1117177, 1171111,1171117,1171771,1177171,1177711,1177717, 1711117,1717117,1771177,1771717]

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Last modified April 25 11:06 EDT 2024. Contains 371967 sequences. (Running on oeis4.)