821100

Appears in sequences

• Number of atoms in first n shells of type I hyperfullerene.at n=34A063497
• Numbers k such that sopfr(k) = ud(k), where sopfr = A001414 and ud = A034444.at n=20A064029
• Number of square tiles in all tilings of a 3 X n board with 1 X 1 and L-shaped tiles (where the L-shaped tiles cover 3 squares).at n=7A127868
• a(n) = (1/2)*(n^4 + 11*n^3 + 53*n^2 + 97*n + 54).at n=34A129026
• Odd-indexed terms of A129026.at n=17A129027