69978

Appears in sequences

• Number of primes of the form (x+1)^5 - x^5 with x <= 10^n.at n=6A221849
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) - b(n-2) + n, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=20A294563
• E.g.f. A(x) satisfies 1 = Sum_{n>=0} (A(x) - x^n)^n / n!.at n=6A384268