T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two king-move neighbors, without 3-loops.
A220652
T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two king-move neighbors, without 3-loops.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =23a(8) =23a(9) =1a(10) =1a(11) =83a(12) =333a(13) =83a(14) =1a(15) =1a(16) =344a(17) =4352a(18) =4352a(19) =344a(20) =1a(21) =1a(22) =1441a(23) =59846a(24) =192413a(25) =59846a(26) =1441a(27) =1a(28) =1a(29) =5881
External references
- oeis: A220652