20594

Appears in sequences

• a(n) = T(2n-1,n-2), T given by A026758.at n=6A026763
• Powers of e^(1/e) rounded up.at n=27A107586
• a(n) = 686*n + 14.at n=29A157366
• Triangle, read by rows, defined by T(n, k) = b(n) - b(k) - b(n-k) + 1, where b(n) = 5*b(n-1) - 4*b(n-2) + 3*b(n-3) - 2*b(n-4) - b(n-5) and b(0) = 0, b(1) = 1, b(2) = 5, b(3) = 21, b(4) = 88.at n=37A176483
• Triangle, read by rows, defined by T(n, k) = b(n) - b(k) - b(n-k) + 1, where b(n) = 5*b(n-1) - 4*b(n-2) + 3*b(n-3) - 2*b(n-4) - b(n-5) and b(0) = 0, b(1) = 1, b(2) = 5, b(3) = 21, b(4) = 88.at n=43A176483
• Numbers k such that k!6 - 3 is prime, where k!6 is the sextuple factorial number (A085158).at n=23A279646
• Expansion of e.g.f. 1/(2 - exp(x))^x.at n=7A354413
• Numbers of the form Product_{k=i..j} prime(k) - Sum_{k=i..j} prime(k) where i < j.at n=48A387946
• E.g.f. A(x) satisfies A(x) = 1/(1 - x*A(x)*(exp(x) - 1)^2).at n=7A392826