80177

Properties

Appears in sequences

• Quartan primes: primes of the form x^4 + y^4, x > 0, y > 0.at n=29A002645
• Number of polyhexes of class PF2.at n=8A030534
• a(n) = 12*a(n-1) - 31*a(n-2) for n > 1; a(0) = 2, a(1) = 17.at n=5A163066
• Number of lattice paths from (0,0) to (n,0) that do not go below the x-axis or above the diagonal x=y and consist of steps U=(1,1), D=(1,-1), H=(1,0) and S=(0,1).at n=9A225041
• Primes of the form 4^x + y^4 with x, y > 0.at n=20A250717
• Primes of form n^2 + 14641.at n=31A256839
• Semi-octavan primes: primes of the form x^4 + y^8.at n=15A291206
• Erroneous version of A030534.at n=8A333799
• a(n) is the number of integer values of the function F_2n(x) = Product_{i=0..2n-1} (x + i) / Sum_{i=0..2n-1} (x + i).at n=12A370601
• Prime numbersat n=7851