Number of 2 X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.
A207069
Number of 2 X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.
Terms
- a(0) =4a(1) =16a(2) =36a(3) =81a(4) =196a(5) =441a(6) =961a(7) =2116a(8) =4624a(9) =10000a(10) =21609a(11) =46656a(12) =100489a(13) =216225a(14) =465124a(15) =1000000a(16) =2149156a(17) =4618201a(18) =9922500a(19) =21316689a(20) =45792289a(21) =98366724a(22) =211295296a(23) =453860416a(24) =974875729a(25) =2093977600a(26) =4497714225a(27) =9660727521a(28) =20750402500
External references
- oeis: A207069