19736
domain: N
Appears in sequences
- Numbers k such that 225*2^k+1 is prime.at n=38A032489
- McKay-Thompson series of class 42d for Monster.at n=54A058678
- Numbers n such that n and 2^n end with the same three digits.at n=19A067866
- Inverse binomial transform of A083589.at n=9A083591
- a(n) = (1/n!)*A001565(n).at n=26A094792
- Indices of primes in sequence defined by A(0) = 53, A(n) = 10*A(n-1) - 27 for n > 0.at n=16A101568
- phi(n) plus the n-th prime gives a square.at n=37A116021
- Minimal number (in decimal representation) with n nonprime substrings in base-3 representation (substrings with leading zeros are considered to be nonprime).at n=48A217103
- q-Expansion of wedge character chi^(3)(q).at n=20A288579
- Number of subsets of {1,2,...,n} such that no two elements differ by 1, 2, or 5.at n=27A375980
- a(n) = 4*n^3 + 5*n - 1.at n=16A383854