Number of nX6 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301882
Number of nX6 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =13a(1) =74a(2) =331a(3) =1754a(4) =8829a(5) =46079a(6) =240222a(7) =1258853a(8) =6603593a(9) =34694809a(10) =182347026a(11) =958881035a(12) =5042935900a(13) =26526353359a(14) =139537750005a(15) =734056924930
External references
- oeis: A301882