Number of nX3 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
A280956
Number of nX3 0..2 arrays with no element equal to more than one of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =4a(1) =42a(2) =241a(3) =1554a(4) =9899a(5) =63085a(6) =402077a(7) =2562733a(8) =16334111a(9) =104108376a(10) =663554669a(11) =4229292041a(12) =26956196587a(13) =171810442122
External references
- oeis: A280956