Number of nX3 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
A277940
Number of nX3 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
Terms
- a(0) =0a(1) =14a(2) =172a(3) =2353a(4) =31011a(5) =410047a(6) =5417792a(7) =71585918a(8) =945856876a(9) =12497509310a(10) =165128212197
External references
- oeis: A277940