a(n) = 8*(Product{i=1..n} p(i + 1)) - 1, where p(i) = i-th prime.
A228698
a(n) = 8*(Product{i=1..n} p(i + 1)) - 1, where p(i) = i-th prime.
Terms
- a(0) =7a(1) =23a(2) =119a(3) =839a(4) =9239a(5) =120119a(6) =2042039a(7) =38798759a(8) =892371479a(9) =25878772919a(10) =802241960519
External references
- oeis: A228698