31450

Appears in sequences

• Numbers that are the sum of 2 nonzero squares in exactly 6 ways.at n=28A025289
• Numbers that are the sum of 2 nonzero squares in 6 or more ways.at n=29A025297
• Numbers that are the sum of 2 distinct nonzero squares in exactly 6 ways.at n=28A025307
• Numbers that are the sum of 2 distinct nonzero squares in 6 or more ways.at n=29A025316
• McKay-Thompson series of class 30D for Monster.at n=40A058615
• 10000n+1, 10000n+3, 10000n+7, 10000n+9 are all primes.at n=14A064963
• Numbers m that are the hypotenuse of exactly 22 distinct integer-sided right triangles, i.e., m^2 can be written as a sum of two squares in 22 ways.at n=29A097103
• Numbers n such that 6*10^n + 5*R_n - 4 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=22A103038
• Number of n-step self-avoiding walks on a line, where step X skips X - 1 spaces.at n=20A175941
• McKay-Thompson series of class 30D for the Monster group with a(0) = 2.at n=40A205962
• Numbers k such that 9^k - 10 is prime.at n=21A217493
• Number of positive integers < 10^n divisible by their first digit.at n=4A247884
• Numbers m having greatest prime power divisor d such that d is smaller than the difference between m and the largest prime smaller than m and d is smaller than the difference between m and twice the largest prime smaller than m/2.at n=11A290290
• Expansion of Product_{k>=1} (1 - x^k)^(k-1).at n=48A319108