27563

Appears in sequences

• Dowling numbers: e.g.f. exp(x + (exp(b*x)-1)/b) with b=9.at n=5A003581
• Engel expansion of Frederick Magata's constant.at n=10A096395
• a(n) is the least nonnegative integer k such that (k^2 + prime(n)^2)/2 is prime but (k^2 + prime(i)^2)/2 is not prime for i < n.at n=48A358804
• Triangle read by rows: T(n,k) is the number of connected unlabeled tiered posets with n elements and height k.at n=59A361958