Number of nonnegative integer matrices with total sum n, nonzero rows and distinct columns each with the same sum with columns in decreasing lexicographic order.
A331395
Number of nonnegative integer matrices with total sum n, nonzero rows and distinct columns each with the same sum with columns in decreasing lexicographic order.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =21a(4) =17a(5) =281a(6) =65a(7) =3209a(8) =10853a(9) =47617a(10) =1025a(11) =3610317a(12) =4097a(13) =22361569a(14) =570275061a(15) =2515267681a(16) =65537a(17) =229801424781a(18) =262145a(22) =4194305
External references
- oeis: A331395