87649

Properties

Appears in sequences

• Base 4 expansion of 1/n has equal percentage of each digit 0,1,2,3 (primitive values of n only).at n=37A074900
• Primes of the form 8n^4 - 2n^3 - 132n^2 + 318n + 80557.at n=6A095946
• Number of compositions of n such that every part divides the largest part.at n=20A130708
• Primes of the form 20n^2+8n+1.at n=25A154405
• Primes of the form x^2 + 18480*y^2.at n=24A173274
• Number of nondecreasing -n..n vectors of length 4 whose dot product with some nondecreasing -n..n vector equals 4.at n=17A226412
• Primes p such that p^6 - p^5 + 1 and p^6 - p^5 - 1 are both primes.at n=17A243522
• Least prime p such that pi(p*n)^2 + 1 = prime(q*n) for some prime q.at n=44A260219
• Primes p such that A001175(p) = (p-1)/8.at n=25A308793
• a(1) = 1; a(n+1) = Sum_{d|n} 4^(n/d - 1) * a(d).at n=9A355117
• G.f. A(x) satisfies: A(x) = x + x^2 * exp( Sum_{k>=1} A(x^k)^4 / (k*x^(3*k)) ).at n=10A363466
• Prime numbersat n=8512