Absolute value of coefficient of term [x^(n-4)] in characteristic polynomial of maximum matrix A of size n X n, where n >= 4. Maximum matrix A(i,j) is MAX(i,j), where indices i and j run from 1 to n.

A112460

Absolute value of coefficient of term [x^(n-4)] in characteristic polynomial of maximum matrix A of size n X n, where n >= 4. Maximum matrix A(i,j) is MAX(i,j), where indices i and j run from 1 to n.

Terms

    a(0) =4a(1) =39a(2) =207a(3) =795a(4) =2475a(5) =6633a(6) =15873a(7) =34749a(8) =70785a(9) =135850a(10) =247962a(11) =433602a(12) =730626a(13) =1191870a(14) =1889550a(15) =2920566a(16) =4412826a(17) =6532713a(18) =9493825a(19) =13567125a(20) =19092645a(21) =26492895a(22) =36288135a(23) =49113675a(24) =65739375a(25) =87091524a(26) =114277284a(27) =148611892a(28) =191648820a(29) =245213100

External references