Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 4Xn array.

A219818

Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 4Xn array.

Terms

    a(0) =10a(1) =33a(2) =169a(3) =648a(4) =2179a(5) =7049a(6) =22017a(7) =65842a(8) =188487a(9) =519028a(10) =1381594a(11) =3567948a(12) =8961630a(13) =21932971a(14) =52387683a(15) =122289966a(16) =279347375a(17) =625196496a(18) =1372463293a(19) =2958423704a(20) =6267975073a(21) =13064759179a(22) =26813365624a(23) =54226962440a(24) =108144189873

External references