Number of n X n (0,1)-matrices A over the reals such that A^2 is the transpose of A.

A336614

Number of n X n (0,1)-matrices A over the reals such that A^2 is the transpose of A.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =10a(4) =32a(5) =112a(6) =424a(7) =1808a(8) =8320a(9) =40384a(10) =210944a(11) =1170688a(12) =6783616a(13) =41411840a(14) =265451008a(15) =1765520128a(16) =12227526656a(17) =88163295232a(18) =656548065280

External references