51968

Appears in sequences

• Numbers k such that k*2^k - k - 1 is prime.at n=26A046843
• Number of subgroups of the group C_n X C_n X C_n (where C_n is the cyclic group of order n).at n=41A064803
• 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, 0, -1), (1, 0, 0), (1, 1, 0)}.at n=8A150730
• A triangle sequence from polynomial coefficients: p(x, n) = (4*(n - 1) + (4(n - 1))*x^2)*p(x, n - 1) + 2*(n - 1)x^2*p(x, n - 2).at n=28A156817
• A triangle sequence from polynomial coefficients: p(x, n) = (4*(n - 1) + (4(n - 1))*x^2)*p(x, n - 1) + 2*(n - 1)x^2*p(x, n - 2).at n=32A156817
• Numbers of the form p^8*q*r where p, q, and r are distinct primes.at n=33A179747
• Number of -n..n arrays x(0..3) of 4 elements with zero sum and nonzero second differences.at n=20A200554
• a(n) = n*(3*n^4 + 15*n^3 + 25*n^2 - 15*n - 28)/60.at n=15A365373