39144

Appears in sequences

• "BHK" (reversible, identity, unlabeled) transform of 1,3,5,7...at n=10A032100
• Triangle read by rows: T(n,k) = number of labeled digraphs with n nodes and k arcs and without directed paths of length >=2, with 0 <= k <= floor(n^2/4).at n=34A052296
• a(n) = 8*a(n-1) - 14*a(n-2) for n > 1; a(0) = 1, a(1) = 7.at n=6A164072
• Triangle read by rows: T(n, m) = binomial(n, m)* Sum_{k=0..m} binomial(n, k) for 0 <= m <= n.at n=51A167024
• The fourth row of the ED2 array A167560.at n=20A167561
• Number of permutations of 1..n avoiding adjacent step pattern up, up, up, up.at n=8A177523
• a(n) = Fibonacci(n)*A008653(n) for n>=1, with a(0)=1, where A008653 is the theta series of direct sum of 2 copies of hexagonal lattice.at n=13A205967