44959

Properties

Appears in sequences

• STIRLING transform of [1,1,2,4,8,16,32,...].at n=8A035009
• Numbers k such that 91^k - 90^k is prime.at n=5A062657
• Triangular array read by rows: for n, k >= 1, a(n+1, 1) = 2*a(n, n); a(n+1, k+1) = a(n, k)+a(n+1, k).at n=35A129340
• Primes of the form n^2+number of divisors of n^2.at n=30A188665
• Primes of the form n^2 + 15.at n=30A243450
• Number of n X 3 nonnegative integer arrays with upper left 0 and every value within 2 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=35A252831
• Square array T(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of e.g.f. exp(k*(exp(x) - 1) + x).at n=52A335975
• Numbers k such that (20^k + 3^k)/23 is prime.at n=9A379986
• Primes having only {4, 5, 9} as digits.at n=11A385793
• Primes having only {0, 4, 5, 9} as digits.at n=30A386071
• Primes having only {2, 4, 5, 9} as digits.at n=35A386154
• Primes having only {4, 5, 6, 9} as digits.at n=27A386189
• Primes having only {4, 5, 8, 9} as digits.at n=19A386192
• Prime numbersat n=4671