Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 4Xn array.
A219521
Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 4Xn array.
Terms
- a(0) =5a(1) =9a(2) =22a(3) =68a(4) =166a(5) =380a(6) =821a(7) =1700a(8) =3374a(9) =6430a(10) =11784a(11) =20830a(12) =35631a(13) =59161a(14) =95611a(15) =150769a(16) =232486a(17) =351241a(18) =520819a(19) =759117a(20) =1089094a(21) =1539882a(22) =2148076a(23) =2959222a(24) =4029523a(25) =5427784a(26) =7237618a(27) =9559936a(28) =12515745a(29) =16249279
External references
- oeis: A219521