Number of inequivalent n X 3 nonnegative integer arrays with row sums 3 and column sums n up to permutations of rows and columns.
A377061
Number of inequivalent n X 3 nonnegative integer arrays with row sums 3 and column sums n up to permutations of rows and columns.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =9a(5) =14a(6) =28a(7) =44a(8) =73a(9) =118a(10) =184a(11) =276a(12) =422a(13) =610a(14) =880a(15) =1248a(16) =1742a(17) =2383a(18) =3250a(19) =4341a(20) =5758a(21) =7550a(22) =9808a(23) =12600a(24) =16103a(25) =20352a(26) =25572a(27) =31890a(28) =39519a(29) =48620
External references
- oeis: A377061