A028981 - OEIS

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A028981 as a simple table

`n`		`a(n)`
`1`		`2`
`2`		`3`
`3`		`5`
`4`		`7`
`5`		`43`
`6`		`211`
`7`		`241`
`8`		`251`
`9`		`271`
`10`		`281`
`11`		`433`
`12`		`443`
`13`		`463`
`14`		`827`
`15`		`857`
`16`		`877`
`17`		`887`
`18`		`2111`
`19`		`2221`
`20`		`2441`
`21`		`2551`
`22`		`4003`
`23`		`4663`
`24`		`4993`
`25`		`8117`
`26`		`8447`
`27`		`8887`
`28`		`20101`
`29`		`20201`
`30`		`21011`
`31`		`21211`
`32`		`21611`
`33`		`21911`
`34`		`22621`
`35`		`22721`
`36`		`22921`
`37`		`23131`
`38`		`23431`
`39`		`23531`
`40`		`23831`
`41`		`24841`

[2,3,5,7,43,211,241,251,271,281,433,443,463,827, 857,877,887,2111,2221,2441,2551,4003,4663,4993, 8117,8447,8887,20101,20201,21011,21211,21611, 21911,22621,22721,22921,23131,23431,23531,23831, 24841]

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Last modified April 18 13:50 EDT 2024. Contains 371780 sequences. (Running on oeis4.)