Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically.
A207929
Number of 3 X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically.
Terms
- a(0) =6a(1) =36a(2) =72a(3) =144a(4) =360a(5) =900a(6) =2160a(7) =5184a(8) =12528a(9) =30276a(10) =73080a(11) =176400a(12) =425880a(13) =1028196a(14) =2482272a(15) =5992704a(16) =14467680a(17) =34928100a(18) =84323880a(19) =203575824a(20) =491475528a(21) =1186526916a(22) =2864529360a(23) =6915585600a(24) =16695700560a(25) =40306986756a(26) =97309674072
External references
- oeis: A207929