Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,2,0,4 for x=0,1,2,3,4.
A196907
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,2,0,4 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =13a(2) =50a(3) =193a(4) =731a(5) =2843a(6) =10970a(7) =42213a(8) =162766a(9) =627709a(10) =2419707a(11) =9327886a(12) =35961933a(13) =138640724a(14) =534481526a(15) =2060527603a(16) =7943732911a(17) =30624562306a(18) =118063389795a(19) =455156544799
External references
- oeis: A196907