83761

Properties

Appears in sequences

• a(n) = ( a(n-1)*a(n-7) + a(n-4)^2 ) / a(n-8); a(0) = ... = a(7) = 1.at n=22A018896
• Denominators of continued fraction convergents to sqrt(507).at n=10A041969
• Numbers n such that 69*2^n-1 is prime.at n=62A050560
• Primes p such that (12*p - 1, 12*p + 1) and (18*p - 1, 18*p + 1) are twin primes.at n=9A138660
• Numbers n with property that concatenation (2*n+1)//n of the decimals is a square.at n=11A176185
• Prime numbersat n=8172