41281

Properties

Appears in sequences

• Numbers k such that 51^k - 50^k is prime.at n=6A062617
• Expansion of g.f. (1-4*x^2+2*x^3)/((1-x)*(1-2*x-2*x^2+2*x^3)).at n=12A106666
• Primes in A005891 = Centered pentagonal numbers: (5n^2 + 5n + 2)/2.at n=20A145838
• Primes of the form x^2 + 18480*y^2.at n=6A173274
• Fibonacci with priority for primes: a(0)=0, a(1)=1, for n >= 2, a(n) = a(n-1) + a(k), where 0 < k <= n-2 is maximal index such that a(n-1) + a(k) is prime. If there is no such k, then a(n) = a(n-1) + a(n-2).at n=33A216231
• Primes that can be generated by the concatenation in base 7, in ascending order, of two consecutive integers read in base 10.at n=33A287308
• Prime numbersat n=4323