44616

Appears in sequences

• a(n) = binomial(2*n,n) * Fibonacci(n).at n=7A119692
• Number of collinear triples of distinct points in Zn x Zn with no two on the same "horizontal" or "vertical" line.at n=12A146557
• Product of Eulerian numbers T(n,k), k=0..n-1.at n=4A169972
• E.g.f. A(x) satisfies A( x/(exp(4*x)*cosh(4*x)) ) = exp(3*x)*cosh(3*x).at n=4A218308
• Numbers n such that A083722(n) > 1 and A083722(n) occurs earlier in A083722.at n=27A293894
• Number of necklaces with n black and n white beads that avoid the pattern BBBB.at n=11A351364
• a(n) = Sum_{k=0..floor(n/3)} binomial(n,k) * binomial(3*k,n-3*k).at n=13A389061