Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,0,2,1 for x=0,1,2,3,4.
A196648
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,4,0,2,1 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =10a(2) =27a(3) =76a(4) =248a(5) =735a(6) =2178a(7) =6622a(8) =20006a(9) =60256a(10) =181914a(11) =549017a(12) =1656115a(13) =4996932a(14) =15077683a(15) =45492308a(16) =137261044a(17) =414152752a(18) =1249599381a(19) =3770345250a(20) =11376066317a(21) =34324394098a(22) =103565135609a(23) =312481530333a(24) =942833738234
External references
- oeis: A196648