A284971 - OEIS

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A284971 as a simple table

`n`		`a(n)`
`1`		`4`
`2`		`7`
`3`		`44`
`4`		`47`
`5`		`74`
`6`		`77`
`7`		`444`
`8`		`447`
`9`		`474`
`10`		`477`
`11`		`744`
`12`		`747`
`13`		`774`
`14`		`777`
`15`		`4444`
`16`		`4447`
`17`		`4474`
`18`		`4477`
`19`		`4744`
`20`		`4747`
`21`		`4774`
`22`		`4777`
`23`		`7444`
`24`		`7447`
`25`		`7474`
`26`		`7477`
`27`		`7744`
`28`		`7747`
`29`		`7774`
`30`		`7777`
`31`		`44444`
`32`		`44447`
`33`		`44474`
`34`		`44477`
`35`		`44744`
`36`		`44747`
`37`		`44774`
`38`		`44777`
`39`		`47444`
`40`		`47447`
`41`		`47474`
`42`		`47477`
`43`		`47744`
`44`		`47747`

[4,7,44,47,74,77,444,447,474,477,744,747,774,777, 4444,4447,4474,4477,4744,4747,4774,4777,7444,7447, 7474,7477,7744,7747,7774,7777,44444,44447,44474, 44477,44744,44747,44774,44777,47444,47447,47474, 47477,47744,47747]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)