52372

Appears in sequences

• Numbers k such that 209*2^k-1 is prime.at n=11A050856
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 0), (-1, 1, 1), (1, 0, -1), (1, 0, 1)}.at n=9A149313
• Sums of 2 successive primes s = prime(m) + prime(m+1) such that all digits of s are primes.at n=34A173719
• Expansion of series reversion of x*(1 - x^3*Sum_{k>=1} x^k).at n=21A215342
• Coordination sequence for (2,3,7) tiling of hyperbolic plane.at n=55A265057
• Expansion of Product_{1 <= i <= j <= k} (1 + x^(i*j*k)).at n=46A321359
• Numbers that are the sum of seven fourth powers in ten or more ways.at n=12A345576