Let N = 123456789101112131415... the concatenation of natural numbers; partition this number into minimal strings of noncomposite numbers, i.e., a(1) = 1 and a(2) onwards are primes.

A068661

Let N = 123456789101112131415... the concatenation of natural numbers; partition this number into minimal strings of noncomposite numbers, i.e., a(1) = 1 and a(2) onwards are primes.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =4567a(4) =89a(5) =101a(6) =11a(7) =2a(8) =13a(9) =14151617a(10) =181a(12) =5

External references