Numbers k such that triangular(k)+1 is a prime power (A025475).
A226103
Numbers k such that triangular(k)+1 is a prime power (A025475).
Terms
- a(0) =0a(1) =2a(2) =5a(3) =15a(4) =32a(5) =90a(6) =527a(7) =17919a(8) =1274592
External references
- oeis: A226103