a(1) = 1; a(n) is the smallest multiple of a(n-1) not divisible by 10 which is greater than the digit reversal of a(n-1). In case R(a(n-1)) < a(n-1) then a(n) = 2*a(n-1).
A076086
a(1) = 1; a(n) is the smallest multiple of a(n-1) not divisible by 10 which is greater than the digit reversal of a(n-1). In case R(a(n-1)) < a(n-1) then a(n) = 2*a(n-1).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =64a(6) =128a(7) =896a(8) =1792a(9) =3584a(10) =7168a(11) =14336a(12) =86016a(13) =172032a(14) =344064a(15) =688128a(16) =1376256a(17) =8257536a(18) =16515072a(19) =33030144a(20) =66060288a(21) =132120576a(22) =792723456a(23) =1585446912a(24) =3170893824a(25) =6341787648a(26) =12683575296a(27) =76101451776a(28) =152202903552
External references
- oeis: A076086