Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4.
A197337
Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =5a(2) =11a(3) =38a(4) =103a(5) =297a(6) =856a(7) =2458a(8) =7045a(9) =20229a(10) =58099a(11) =166807a(12) =478862a(13) =1374798a(14) =3947115a(15) =11332271a(16) =32534963a(17) =93408015a(18) =268175294a(19) =769933854a(20) =2210486645a(21) =6346325657a(22) =18220355429a(23) =52310797713a(24) =150184749648a(25) =431181704516
External references
- oeis: A197337