Number of nX3 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 nonincreasing columns, 0..2 nX3 array.
A219878
Number of nX3 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 nonincreasing columns, 0..2 nX3 array.
Terms
- a(0) =6a(1) =11a(2) =47a(3) =146a(4) =410a(5) =1069a(6) =2701a(7) =6645a(8) =15787a(9) =36047a(10) =79071a(11) =166909a(12) =339837a(13) =668982a(14) =1276058a(15) =2363344a(16) =4258060a(17) =7476554a(18) =12815234a(19) =21476998a(20) =35244068a(21) =56710659a(22) =89591851a(23) =139128423a(24) =212611297a(25) =320053673a(26) =475043961a(27) =695818283a(28) =1006597679
External references
- oeis: A219878