36598

Appears in sequences

• Number of unrooted achiral trees with n nodes.at n=42A003244
• Number of unlabeled mobiles with cycles of length at least 3.at n=18A052523
• 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), (0, 0, 1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.at n=7A151246
• Indices of Ulam prime triples, where u(k), u(k+1) and u(k+2) are all primes, and u(k) = A002858(k) are the Ulam numbers.at n=16A307330