Number of 4 X 4 traceless matrices of nonnegative integers with all row and column sums <= n.
A244877
Number of 4 X 4 traceless matrices of nonnegative integers with all row and column sums <= n.
Terms
- a(0) =1a(1) =108a(2) =3396a(3) =49852a(4) =447777a(5) =2862384a(6) =14265040a(7) =58788720a(8) =208577633a(9) =655618172a(10) =1864806372a(11) =4877412332a(12) =11877770177a(13) =27199536768a(14) =59037366080a(15) =122252641280a(16) =242826555969a(17) =464730264172a(18) =860261412132
External references
- oeis: A244877