Number of fixed poly-[4.8^2]-tiles (holes allowed) with n cells (division into triangles is significant).

A197467

Number of fixed poly-[4.8^2]-tiles (holes allowed) with n cells (division into triangles is significant).

Terms

    a(0) =4a(1) =6a(2) =12a(3) =25a(4) =56a(5) =132a(6) =320a(7) =792a(8) =1976a(9) =4962a(10) =12576a(11) =32140a(12) =82704a(13) =214044a(14) =556576a(15) =1453210a(16) =3808592a(17) =10015134a(18) =26413468a(19) =69844263a(20) =185126524a(21) =491758054a(22) =1308874676a(23) =3490068514a(24) =9321677540a(25) =24935748182a(26) =66798957432

External references