Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,1,1 for x=0,1,2,3,4.
A197884
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =3a(2) =6a(3) =47a(4) =77a(5) =196a(6) =529a(7) =1637a(8) =4235a(9) =11211a(10) =30271a(11) =83254a(12) =225148a(13) =606579a(14) =1638498a(15) =4440639a(16) =12016918a(17) =32485381a(18) =87846790a(19) =237662631a(20) =642926239a(21) =1738933011a(22) =4703362637a(23) =12722244082a(24) =34413103568a(25) =93083202626a(26) =251777401480
External references
- oeis: A197884