a(n) is the permanent of the n X n matrix M(n) that is defined by M[i,j] = floor(i*j/3).

A358157

a(n) is the permanent of the n X n matrix M(n) that is defined by M[i,j] = floor(i*j/3).

Terms

    a(0) =1a(1) =0a(2) =0a(3) =1a(4) =32a(5) =1422a(6) =146720a(7) =18258864a(8) =3217515264a(9) =910849979232

External references