Number of nX6 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300370
Number of nX6 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =2a(2) =8a(3) =22a(4) =92a(5) =366a(6) =1592a(7) =6925a(8) =36101a(9) =161645a(10) =762469a(11) =3571297a(12) =16723114a(13) =78166439a(14) =365870424a(15) =1715599255a(16) =8028145462a(17) =37613414368a(18) =176081584796a(19) =824491774631
External references
- oeis: A300370