Irregular triangle read by rows. T(n,k) is the number of n X n matrices over GF(2) whose characteristic polynomial is a product of k distinct squarefree irreducible factors.

A344873

Irregular triangle read by rows. T(n,k) is the number of n X n matrices over GF(2) whose characteristic polynomial is a product of k distinct squarefree irreducible factors.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =0a(4) =2a(5) =6a(6) =0a(7) =48a(8) =112a(9) =0a(10) =4032a(11) =11520a(12) =6720a(13) =0a(14) =1935360a(15) =4952064a(16) =2856960a(17) =0a(18) =2879815680a(19) =9558687744a(20) =7871496192a(21) =0a(26) =0

External references