Number of (n+1)X(6+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
A251026
Number of (n+1)X(6+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
Terms
- a(0) =49481a(1) =144737a(2) =272547a(3) =563271a(4) =1078862a(5) =2160510a(6) =4230166a(7) =8587303a(8) =17595371a(9) =37245814a(10) =80267686a(11) =176914157a(12) =395061425a(13) =892649426a(14) =2030400282a(15) =4641838603a(16) =10641445579a(17) =24442851146a(18) =56201464318a(19) =129311654629a(20) =297631797905
External references
- oeis: A251026