Number of (n+1)X(5+1) 0..1 arrays with nondecreasing sum of every two consecutive values in every row and column.
A250429
Number of (n+1)X(5+1) 0..1 arrays with nondecreasing sum of every two consecutive values in every row and column.
Terms
- a(0) =256a(1) =1600a(2) =10000a(3) =40000a(4) =160000a(5) =490000a(6) =1500625a(7) =3841600a(8) =9834496a(9) =22127616a(10) =49787136a(11) =101606400a(12) =207360000a(13) =392040000a(14) =741200625a(15) =1317690000a(16) =2342560000a(17) =3958926400a(18) =6690585616a(19) =10837642816a(20) =17555190016a(21) =27429984400a(22) =42859350625
External references
- oeis: A250429