Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

A234562

Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

Terms

    a(0) =17518a(1) =24420a(2) =33946a(3) =57210a(4) =94114a(5) =187686a(6) =358450a(7) =810702a(8) =1742578a(9) =4339470a(10) =10208626a(11) =27473790a(12) =69051154a(13) =197748366a(14) =520464850a(15) =1563624222a(16) =4244422258a(17) =13213530990a(18) =36597846706a(19) =116923590270a(20) =328074294994

External references