Number of n X 1 0..3 arrays with every repeated value in every row and column one larger mod 4 than the previous repeated value, and upper left element zero.
A268164
Number of n X 1 0..3 arrays with every repeated value in every row and column one larger mod 4 than the previous repeated value, and upper left element zero.
Terms
- a(0) =1a(1) =4a(2) =15a(3) =55a(4) =197a(5) =695a(6) =2421a(7) =8351a(8) =28573a(9) =97111a(10) =328197a(11) =1103887a(12) =3697709a(13) =12342407a(14) =41069973a(15) =136292543a(16) =451213885a(17) =1490644663a(18) =4915285029a(19) =16180569199a(20) =53184539981a(21) =174578141159a(22) =572354795445
External references
- oeis: A268164