155461

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 52.at n=8A031640
• Expansion of (1 + 5*x - 12*x^2 - 80*x^3)/(1 - 33*x^2 + 272*x^4).at n=8A097113
• a(n) = number of 8-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..71].at n=16A178879
• Primes p such that (p^1024 + 1)/2 is prime.at n=20A341272
• Prime numbersat n=14312