Number of (n+1) X (1+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0001 0101 or 0111.
A259290
Number of (n+1) X (1+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0001 0101 or 0111.
Terms
- a(0) =10a(1) =26a(2) =66a(3) =170a(4) =434a(5) =1114a(6) =2850a(7) =7306a(8) =18706a(9) =47930a(10) =122754a(11) =314474a(12) =805490a(13) =2063386a(14) =5285346a(15) =13538890a(16) =34680274a(17) =88835834a(18) =227556930a(19) =582900266a(20) =1493127986a(21) =3824729050a(22) =9797240994a(23) =25096157194a(24) =64285121170a(25) =164669749946
External references
- oeis: A259290