Number of 1-cell columns in all deco polyominoes of height n.
A121555
Number of 1-cell columns in all deco polyominoes of height n.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =32a(4) =178a(5) =1164a(6) =8748a(7) =74304a(8) =704016a(9) =7362720a(10) =84255840a(11) =1047358080a(12) =14054739840a(13) =202514376960
External references
- oeis: A121555