25470

Appears in sequences

• Number of distinct solutions of sum{i=1..5}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1.at n=7A180776
• Molecular topological indices of the web graphs.at n=14A192850
• Row lengths of table A174382.at n=28A240508
• The number of binary heaps on n elements whose breadth-first search reading word avoids 321.at n=12A246829
• G.f.: (Sum_{k>=1} x^k/(1-x^k) * Product_{k>=1} 1/(1-x^k) )^2.at n=14A305120
• Numbers k sandwiched between twin primes, such that k times the reverse of k is also sandwiched between twin primes.at n=23A357076
• Number of connected components of n faces of the truncated cuboctahedron up to the 48 rotations and reflections of the truncated cuboctahedron.at n=10A384071