Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9.

A234134

Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9.

Terms

    a(0) =80a(1) =152a(2) =296a(3) =680a(4) =1544a(5) =4040a(6) =9992a(7) =28040a(8) =72200a(9) =209672a(10) =549896a(11) =1623560a(12) =4294664a(13) =12782600a(14) =33951752a(15) =101455880a(16) =270016520a(17) =808464392a(18) =2153791496a(19) =6455058440a(20) =17205067784a(21) =51589988360a(22) =137539682312a(23) =412518285320

External references