40091

Appears in sequences

• Numbers n such that prime(n) == -5 (mod n).at n=18A092047
• Numbers k such that prime(k+1) == 1 (mod k).at n=17A105286
• Row sums of triangle A163840.at n=9A163843
• a(n) is the smallest number that is the sum of both 2n-1 and 2n+1 consecutive primes.at n=21A213174
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 225", based on the 5-celled von Neumann neighborhood.at n=39A270944
• Square array read by upward antidiagonals: T(n,k) is the number of n-ary strings of length k containing 000.at n=50A340242