143615

Appears in sequences

• Number of (n+1) X (2+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0011 or 0101.at n=15A259216
• G.f.: x * Product_{j>=1, k>=1} (1 + a(j)*x^(j*k)).at n=14A308154