Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,1,1 for x=0,1,2,3,4.
A197359
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =9a(2) =33a(3) =113a(4) =593a(5) =2435a(6) =10317a(7) =45615a(8) =195093a(9) =841571a(10) =3646693a(11) =15718319a(12) =67872219a(13) =293228491a(14) =1265855985a(15) =5466238427a(16) =23604968149a(17) =101924529475a(18) =440126714041
External references
- oeis: A197359