T(n,k)=Number of nXnXn triangular 0..k arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors.

A214352

T(n,k)=Number of nXnXn triangular 0..k arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors.

Terms

    a(0) =2a(1) =3a(2) =6a(3) =4a(4) =17a(5) =26a(6) =5a(7) =36a(8) =169a(9) =160a(10) =6a(11) =65a(12) =660a(13) =2853a(14) =1386a(15) =7a(16) =106a(17) =1951a(18) =23554a(19) =80573a(20) =16814a(21) =8a(22) =161a(23) =4822a(24) =127813a(25) =1602092a(26) =3778867a(27) =284724a(28) =9a(29) =232

External references