27901

Properties

Appears in sequences

• Sextan primes: p = (x^6 + y^6)/(x^2 + y^2).at n=33A002647
• Numbers k such that the continued fraction for sqrt(k) has period 95.at n=22A020434
• Number of strings of n distinct digits from 1-9 that are the last n digits of a square in base 10.at n=8A036756
• Smallest prime p such that there are n strings of consecutive integers all having products = 1 mod p.at n=9A060427
• a(n) = n^3 + n^2 + 1.at n=30A098547
• Inverse Moebius transform of 5-simplex numbers A000389.at n=17A101289
• Square-chain primes (including square-loop primes).at n=39A108659
• Number of permutations of length n that avoid the patterns 132, 4321.at n=25A116701
• Primes of the form k^3 + k^2 + 1.at n=11A120479
• Primes of the form k^2 + 12.at n=24A138368
• a(n) = 900*n + 1.at n=30A158407
• Primes p such that p$ + 1 is also prime. Here '$' denotes the swinging factorial function (A056040).at n=10A163079
• Floor-Sqrt transform of large Fine numbers (A000957).at n=20A192675
• Primes p such that q = 2*p^3-1 and 2*p*q^2-1 are both prime.at n=8A224614
• a(n) = 31*n^2 + 1.at n=30A247155
• Numbers k such that (28*10^k - 43)/3 is prime.at n=29A271377
• Partial sums of A299256.at n=26A299262
• Primes of the form prime(i)*prime(i+1)+prime(i+2)*prime(i+3)+...+prime(k-1)*prime(k).at n=14A340465
• a(n) = p(n^2*p(n)), where p(x) is the least prime > x.at n=30A378137
• Prime numbersat n=3045