67826

Appears in sequences

• Numbers k such that 2*5^k + 3 is prime.at n=19A057914
• Expansion of the g.f. (x^2-x+1)*(x^2-3*x+3)/(x-1)^6.at n=21A257890
• Numbers k such that 403*2^k+1 is prime.at n=38A323101
• a(n) = Sum_{k=0..n} (-1)^k * binomial(5*n-k+2,n-k).at n=5A390548