Smallest prime factor of the concatenation of terms of the n-th row of the Stirling's number of the second kind.
A100757
Smallest prime factor of the concatenation of terms of the n-th row of the Stirling's number of the second kind.
Terms
- a(0) =11a(1) =131a(2) =3a(3) =7a(4) =101a(5) =9066319a(6) =3a(7) =3a(8) =89a(9) =3a(10) =1721a(11) =13a(12) =8761a(13) =1213a(14) =7a(15) =3a(17) =37a(18) =29a(19) =3a(20) =3a(21) =11a(22) =3a(23) =19457a(24) =7a(25) =19a(26) =11a(27) =307a(28) =3a(29) =521a(30) =7
External references
- oeis: A100757