147459

Appears in sequences

• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+241)^2 = y^2.at n=11A129991
• Numbers n such that 2*17^n + 1 is prime.at n=3A141797
• Numbers n such that m + (sum of digits in base-4 representation of m) = n has exactly three solutions.at n=28A230635
• Number of permutations f of {1,...,n} such that 3^k + 3^(f(k)) - 1 is prime for every k = 1,...,n.at n=19A321766