1025124517
domain: N
Appears in sequences
- Positive integer values of k such that 10*k^2 - 9 is a square.at n=17A052454
- a(0) = 1, a(1) = 2; a(n+1) = 6*a(n) + a(n-1) for n>1.at n=12A179237
- Hypotenuses of primitive Pythagorean triples in A195556 and A195557.at n=16A195558
- a(n) = 6*a(n-2) + a(n-4), where a(0) = 2, a(1) = 8, a(2) = 13, a(3) = 49.at n=22A228469