208657

Properties

Appears in sequences

• Numerators of continued fraction convergents to sqrt(322).at n=7A041608
• Primes of the form 648*k^2 - 72*k + 1.at n=7A154511
• a(n) = 648*n^2 - 72*n + 1.at n=17A154514
• a(n) = 13122*n^2 - 324*n + 1.at n=3A157509
• Linear recurrence with signature (1,1,-1,1,1), where the first terms are powers of 2 (1,2,4,8,16).at n=24A294364
• Prime k with sigma(sigma(sigma(k))) < 3*k + 1.at n=36A320517
• Primes p such that the multiplicative order of 3 modulo p is 2 times a power of 3.at n=13A367649
• Sum of the legs of the unique primitive Pythagorean triple whose inradius is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers.at n=12A381721
• Prime numbersat n=18693