a(n+1) is the smallest prime > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(1)=7.
A242907
a(n+1) is the smallest prime > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(1)=7.
Terms
- a(0) =7a(1) =17a(2) =71a(3) =107a(4) =701a(5) =1087a(6) =8017a(7) =10487a(8) =10847a(9) =14087a(10) =18047a(11) =48017a(12) =70481a(13) =70841a(14) =78041a(15) =78401a(16) =80147a(17) =80471a(18) =81047a(19) =84017a(20) =84701a(21) =87041a(22) =100847a(23) =104087a(24) =184007a(25) =400187a(26) =400871a(27) =401087a(28) =407801a(29) =408071
External references
- oeis: A242907