Number of positive terms in a symmetric determinant of order n.
A059423
Number of positive terms in a symmetric determinant of order n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =8a(5) =38a(6) =193a(7) =1243a(8) =8971a(9) =77039a(10) =711719a(11) =7557974a(12) =85038784a(13) =1075040038a(14) =14252911927a(15) =208885729397
External references
- oeis: A059423