Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X 4 array.
A219498
Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 n X 4 array.
Terms
- a(0) =4a(1) =7a(2) =18a(3) =35a(4) =58a(5) =88a(6) =126a(7) =173a(8) =230a(9) =298a(10) =378a(11) =471a(12) =578a(13) =700a(14) =838a(15) =993a(16) =1166a(17) =1358a(18) =1570a(19) =1803a(20) =2058a(21) =2336a(22) =2638a(23) =2965a(24) =3318a(25) =3698a(26) =4106a(27) =4543a(28) =5010a(29) =5508
External references
- oeis: A219498