26342

Appears in sequences

• Numbers k such that 4*5^k + 1 is prime.at n=9A204322
• Number of (n+1) X 5 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock equal to the number in all its horizontal and vertical neighbors.at n=15A206263
• Numbers k such that 3^k - 8 is prime.at n=21A217135
• Expansion of Product_{k>=1} ((1+x^(3*k-1))*(1+x^(3*k-2)))^k.at n=40A262884
• a(1)=2; for n > 1, a(n) is the square root of the smallest square with a(n-1) as a prefix in base 10.at n=24A308055