Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302665
Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =14a(2) =43a(3) =194a(4) =691a(5) =2802a(6) =10660a(7) =41839a(8) =161878a(9) =630842a(10) =2449576a(11) =9528949a(12) =37035686a(13) =144004769a(14) =559817133a(15) =2176500315a(16) =8461548011a(17) =32896646099a(18) =127893433256a(19) =497218644961
External references
- oeis: A302665