30942

Appears in sequences

• Numbers whose set of base-13 digits is {1,2}.at n=31A032933
• Positive square-root of terms of the self-convolution of A087150.at n=39A087151
• Numbers n with property that n^2 is a sum of some 120 successive primes.at n=14A166262
• Numbers k such that the sum of the divisors of k and the sum of the distinct prime divisors of k are both a square.at n=26A194196
• a(n) = A047848(10, n).at n=5A196792
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 209", based on the 5-celled von Neumann neighborhood.at n=35A270893
• Number of cyclic subgroups of the group (C_n)^5, where C_n is the cyclic group of order n.at n=12A344219
• Primitive practical numbers of the form 2 * 3^i * prime(k).at n=40A367481