57796

Appears in sequences

• Numbers n such that 177*2^n-1 is prime.at n=24A050840
• Half the difference between the larger and smaller term of the n-th amicable pair.at n=35A162884
• Half the difference between the larger and smaller terms of the n-th amicable pair (x,y) given in A259933.at n=35A275470
• G.f. A(x) satisfies: A(x) = x + x^2 * exp(A(x) - A(-x^2)/2 + A(x^3)/3 - A(-x^4)/4 + ...).at n=19A345234
• a(n) = Sum_{k=1..n} k^3*sigma(k), where sigma is A000203.at n=10A364194