145590

Appears in sequences

• G.f. A(x) satisfies: A(x) = Sum_{n>=0} [x*A(x)]^(2^n-1).at n=15A134527
• 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, 0, 1), (-1, 1, 1), (1, -1, 0), (1, 0, -1), (1, 0, 0)}.at n=10A148910
• Integers n such that 6n, 36n, and 216n fall between pairs of twin primes, that is, 6n-1, 6n+1, 36n-1, 36n+1, 216n-1, and 216n+1 are prime.at n=31A192851