Number of n X 5 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A299592
Number of n X 5 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =8a(2) =19a(3) =53a(4) =113a(5) =256a(6) =541a(7) =1148a(8) =2488a(9) =5349a(10) =11453a(11) =24617a(12) =52916a(13) =113605a(14) =243988a(15) =524156a(16) =1125805a(17) =2417997a(18) =5193737a(19) =11155712a(20) =23961101a(21) =51466060a(22) =110544232a(23) =237437573a(24) =509991637a(25) =1095411153a(26) =2352832580a(27) =5053645925a(28) =10854721796
External references
- oeis: A299592