849751

Appears in sequences

• Coordination sequence for hyperbolic tessellation 3^7 (from triangle group (2,3,7)).at n=13A001354
• Fibonacci sequence beginning 0, 7.at n=26A022090
• a(n)=det(M_n) where M_n is the n X n matrix m(i,j)=1 if sigma(i+j) is even, 0 otherwise.at n=33A096734