Number of n X n symmetric binary arrays with rows, considered as binary numbers, in strictly increasing order, and no more than 3 ones in any row.
A162093
Number of n X n symmetric binary arrays with rows, considered as binary numbers, in strictly increasing order, and no more than 3 ones in any row.
Terms
- a(0) =2a(1) =3a(2) =9a(3) =41a(4) =205a(5) =1190a(6) =7529a(7) =51751a(8) =387737a(9) =3113542a(10) =26765060a(11) =244702054a(12) =2367701249a(13) =24169612036a(14) =259289525510
External references
- oeis: A162093