1/4 the number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock having distinct clockwise edge differences.
A209722
1/4 the number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock having distinct clockwise edge differences.
Terms
- a(0) =4a(1) =5a(2) =6a(3) =8a(4) =10a(5) =14a(6) =18a(7) =26a(8) =34a(9) =50a(10) =66a(11) =98a(12) =130a(13) =194a(14) =258a(15) =386a(16) =514a(17) =770a(18) =1026a(19) =1538a(20) =2050a(21) =3074a(22) =4098a(23) =6146a(24) =8194a(25) =12290a(26) =16386a(27) =24578a(28) =32770a(29) =49154
External references
- oeis: A209722