426421

Properties

Appears in sequences

• a(0)=1, a(1)=4, a(n) = 10a(n-1) + a(n-2).at n=6A109109
• Hypotenuses of primitive Pythagorean triples in A195571 and A195572.at n=7A195573
• Primes with nonzero digits such that sum of cubes of digits equal to square of sums.at n=25A225567
• Prime numbersat n=35881