Number of 4 X n 0..2 arrays with rows nondecreasing and antidiagonals unimodal.
A224014
Number of 4 X n 0..2 arrays with rows nondecreasing and antidiagonals unimodal.
Terms
- a(0) =81a(1) =1296a(2) =7378a(3) =28541a(4) =90051a(5) =245055a(6) =595822a(7) =1325316a(8) =2742301a(9) =5343468a(10) =9896484a(11) =17548273a(12) =29963249a(13) =49496631a(14) =79408380a(15) =124123708a(16) =189546519a(17) =283432552a(18) =415829406a(19) =599591037a(20) =850974727a(21) =1190328935a(22) =1642880850a(23) =2239632876
External references
- oeis: A224014