Number of n X 2 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..3 n X 2 array.

A220198

Number of n X 2 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..3 n X 2 array.

Terms

    a(0) =4a(1) =10a(2) =38a(3) =103a(4) =245a(5) =547a(6) =1168a(7) =2395a(8) =4724a(9) =8982a(10) =16504a(11) =29381a(12) =50797a(13) =85475a(14) =140254a(15) =224821a(16) =352624a(17) =541994a(18) =817506a(19) =1211611a(20) =1766573a(21) =2536747a(22) =3591236a(23) =5016967a(24) =6922228a(25) =9440710a(26) =12736100a(27) =17007273a(28) =22494133a(29) =29484155

External references