Number of alternating sign 2n+1 X 2n+1 matrices invariant under all symmetries of the square.
A005164
Number of alternating sign 2n+1 X 2n+1 matrices invariant under all symmetries of the square.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =13a(6) =46a(7) =248a(8) =1516a(9) =13654a(10) =142873a(11) =2156888a(12) =38456356a(13) =974936056a(14) =29540545024
External references
- oeis: A005164