Number of (4*n)X4 binary arrays with rows in nonincreasing order, n ones in every column and no more than 3 ones in any row.

A188411

Number of (4*n)X4 binary arrays with rows in nonincreasing order, n ones in every column and no more than 3 ones in any row.

Terms

    a(0) =14a(1) =124a(2) =723a(3) =3217a(4) =11712a(5) =36659a(6) =101829a(7) =256901a(8) =598561a(9) =1304537a(10) =2685847a(11) =5264872a(12) =9887953a(13) =17884567a(14) =31286432a(15) =53124506a(16) =87823301a(17) =141718060a(18) =223721900a(19) =346177936a(20) =525932968a(21) =785679308a(22) =1155612796a(23) =1675467445a(24) =2396988410

External references