Number of nX5 0..1 arrays with every element unequal to 0, 1 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A317770
Number of nX5 0..1 arrays with every element unequal to 0, 1 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =11a(2) =16a(3) =14a(4) =19a(5) =30a(6) =42a(7) =67a(8) =100a(9) =160a(10) =248a(11) =401a(12) =630a(13) =1025a(14) =1615a(15) =2605a(16) =4136a(17) =6726a(18) =10725a(19) =17402a(20) =27961a(21) =45514a(22) =73224a(23) =118990a(24) =192065a(25) =312212a(26) =504293a(27) =819526a(28) =1326302a(29) =2155198
External references
- oeis: A317770