Number of (n+1)X8 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.

A206205

Number of (n+1)X8 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.

Terms

    a(0) =468968a(1) =192808a(2) =145208a(3) =337896a(4) =713408a(5) =1080648a(6) =3270240a(7) =7008160a(8) =10936160a(9) =33660800a(10) =72736960a(11) =113216800a(12) =339966080a(13) =729156480a(14) =1132733728a(15) =3399739520a(16) =7291568000a(17) =11327337280a(18) =33997395200a(19) =72915680000a(20) =113273372800

External references