Number of (n+1) X 5 0..2 arrays with every 2 X 2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor.

A207145

Number of (n+1) X 5 0..2 arrays with every 2 X 2 subblock having nonzero determinant and commuting with every horizontal or vertical neighbor.

Terms

    a(0) =62a(1) =95a(2) =110a(3) =190a(4) =218a(5) =374a(6) =434a(7) =742a(8) =866a(9) =1478a(10) =1730a(11) =2954a(12) =3458a(13) =5906a(14) =6914a(15) =11810a(16) =13826a(17) =23618a(18) =27650a(19) =47234a(20) =55298a(21) =94466a(22) =110594a(23) =188930a(24) =221186a(25) =377858a(26) =442370a(27) =755714a(28) =884738a(29) =1511426

External references