Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.
A316307
Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =5a(1) =17a(2) =21a(3) =74a(4) =148a(5) =404a(6) =1046a(7) =3023a(8) =8295a(9) =24149a(10) =72052a(11) =216111a(12) =652104a(13) =2002615a(14) =6178078a(15) =19140977a(16) =59556817a(17) =186014195a(18) =582148144a(19) =1824951156a(20) =5729180734a(21) =18006356728a(22) =56634356929a(23) =178236709353a(24) =561215535231
External references
- oeis: A316307