a(1) = 1; for n>1, a(n) = least multiple of a(n-1) such that the termwise concatenation of a(n), a(n-1),...a(2), a(1) is prime.
A111674
a(1) = 1; for n>1, a(n) = least multiple of a(n-1) such that the termwise concatenation of a(n), a(n-1),...a(2), a(1) is prime.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =15a(4) =75a(5) =525a(6) =7875a(7) =126000a(8) =2520000a(9) =30240000a(10) =151200000a(11) =5594400000a(12) =341258400000
External references
- oeis: A111674