26995669

Properties

Appears in sequences

• Positive integer values of k such that 10*k^2 - 9 is a square.at n=14A052454
• a(0) = 1, a(1) = 2; a(n+1) = 6*a(n) + a(n-1) for n>1.at n=10A179237
• Numerators in convergents to infinitely repeating period 3 palindromic continued fraction [1,2,1,...].at n=28A179238
• Hypotenuses of primitive Pythagorean triples in A195556 and A195557.at n=13A195558
• a(n) = 6*a(n-2) + a(n-4), where a(0) = 2, a(1) = 8, a(2) = 13, a(3) = 49.at n=18A228469
• Prime numbersat n=1682803