Number of 4X4X4 triangular 0..n arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors.

A214386

Number of 4X4X4 triangular 0..n arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors.

Terms

    a(0) =16a(1) =890a(2) =11048a(3) =74260a(4) =350232a(5) =1305392a(6) =4107248a(7) =11363940a(8) =28412824a(9) =65439858a(10) =140806952a(11) =286079040a(12) =553378176a(13) =1025850192a(14) =1832212128a(15) =3166557496a(16) =5314833216a(17) =8689668506a(18) =13875533864a(19) =21686539292a(20) =33239546824a(21) =50045674976

External references