Number of ways to tile a hexagonal strip made up of n equilateral triangles, using triangles, diamonds, and trapezoids.

A385868

Number of ways to tile a hexagonal strip made up of n equilateral triangles, using triangles, diamonds, and trapezoids.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =7a(5) =13a(6) =39a(7) =66a(8) =110a(9) =200a(10) =604a(11) =1032a(12) =1741a(13) =3149a(14) =9476a(15) =16202a(16) =27337a(17) =49461a(18) =148841a(19) =254466a(20) =429308a(21) =776774a(22) =2337580a(23) =3996430a(24) =6742361a(25) =12199339a(26) =36711974a(27) =62764458a(28) =105889743a(29) =191592331

External references