Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.
A236877
Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.
Terms
- a(0) =81a(1) =211a(2) =537a(3) =1523a(4) =4309a(5) =12723a(6) =37701a(7) =113771a(8) =344885a(9) =1055235a(10) =3241909a(11) =10016411a(12) =31053157a(13) =96649875a(14) =301652453a(15) =944231531a(16) =2962345045a(17) =9314825443a(18) =29344133653a(19) =92608555963a(20) =292718067013a(21) =926588796211
External references
- oeis: A236877