a(n) is the number of prime quadruples of the form {p, p+2, p+6, p+12} with p < 10^n.
A370158
a(n) is the number of prime quadruples of the form {p, p+2, p+6, p+12} with p < 10^n.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =8a(4) =24a(5) =76a(6) =313a(7) =1644a(8) =9397a(9) =56734a(10) =361386a(11) =2417777a(12) =16785520a(13) =120150723a(14) =882578840
External references
- oeis: A370158