T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the upper median value of each 2X2 subblock.

A235972

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the upper median value of each 2X2 subblock.

Terms

    a(0) =256a(1) =1964a(2) =1964a(3) =13194a(4) =16744a(5) =13194a(6) =85476a(7) =119770a(8) =119770a(9) =85476a(10) =556486a(11) =856720a(12) =872370a(13) =856720a(14) =556486a(15) =3614066a(16) =6207010a(17) =7116040a(18) =7116040a(19) =6207010a(20) =3614066a(21) =23457361a(22) =44922684a(23) =60649470a(24) =77914322a(25) =60649470a(26) =44922684a(27) =23457361

External references