40805

Appears in sequences

• a(n) = 4*prime(n)^2+1.at n=25A060429
• a(n) = 81*n^2 - 90*n + 26.at n=23A154295
• a(n) is the number of primes occurring between A053182(n) and A053183(n) (excluding the endpoints).at n=15A238399
• Prime sieve of Phi.at n=40A247861