Number of planar n X n X n binary triangular grids with no more than 1 one in any 5 X 5 X 5 subtriangle.

A153535

Number of planar n X n X n binary triangular grids with no more than 1 one in any 5 X 5 X 5 subtriangle.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =7a(4) =11a(5) =16a(6) =38a(7) =113a(8) =342a(9) =975a(10) =2636a(11) =8729a(12) =35249a(13) =159811a(14) =757035a(15) =3630603a(16) =19165047a(17) =115453377a(18) =782498885a(19) =5793617152a(20) =45722686214a(21) =390614558026

External references