Number of (n+1)X(2+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.
A232400
Number of (n+1)X(2+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.
Terms
- a(0) =4a(1) =16a(2) =20a(3) =72a(4) =124a(5) =356a(6) =664a(7) =1808a(8) =3572a(9) =9148a(10) =19040a(11) =46784a(12) =100412a(13) =240716a(14) =527128a(15) =1242560a(16) =2758676a(17) =6430140a(18) =14405648a(19) =33331296a(20) =75121004a(21) =172964748a(22) =391375112a(23) =898217344a(24) =2037797060a(25) =4666779068a(26) =10606071296a(27) =24254561056a(28) =55186525212
External references
- oeis: A232400