144361

Appears in sequences

• a(n) = -1 - 2*n + n^2 + 2*n^3 + n^4.at n=19A165568
• a(2n)=A165568(n). a(2n+1)=A165563(n).at n=38A171733
• Number of vertices in regular n-gon after 2 generations of mitosis.at n=33A349967