Number of (n+3) X 8 0..3 arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock.

A186595

Number of (n+3) X 8 0..3 arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock.

Terms

    a(0) =21993587a(1) =444066a(2) =1398069a(3) =5080629a(4) =11494293a(5) =12478581a(6) =12563805a(7) =12653493a(8) =12809421a(9) =13255797a(10) =15722997a(11) =19992861a(12) =36147621a(13) =56126589a(14) =101158704a(15) =151867875a(16) =238699518a(17) =338342913a(18) =520547349a(19) =732592545a(20) =1101469437a(21) =1568718489

External references