3409560

Appears in sequences

• a(n) = (2*n+1)*(2*n+2)*(2*n+4)*(2*n+5).at n=20A069079
• 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=20A205967