Number of n X n binary arrays with all ones connected only either as two by three or three by two blocks.
A146152
Number of n X n binary arrays with all ones connected only either as two by three or three by two blocks.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =13a(4) =47a(5) =375a(6) =3972a(7) =47068a(8) =892007a(9) =26215027a(10) =1025956370a(11) =55524872121
External references
- oeis: A146152