T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with each row and column divisible by 7, read as a base-5 number with top and left being the most significant digits.
A263558
T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with each row and column divisible by 7, read as a base-5 number with top and left being the most significant digits.
Terms
- a(0) =4a(1) =10a(2) =10a(3) =40a(4) =123a(5) =40a(6) =148a(7) =2210a(8) =2210a(9) =148a(10) =592a(11) =38765a(12) =198581a(13) =38765a(14) =592a(15) =2344a(16) =695964a(17) =17320937a(18) =17320937a(19) =695964a(20) =2344a(21) =9376a(22) =12496675a(23) =1552603242a(24) =7482387694a(25) =1552603242a(26) =12496675a(27) =9376a(28) =37456a(29) =224917356
External references
- oeis: A263558