Number of n-step closed paths on the Cairo pentagonal lattice graph starting from a degree-3 node.

A357811

Number of n-step closed paths on the Cairo pentagonal lattice graph starting from a degree-3 node.

Terms

    a(0) =1a(1) =0a(2) =3a(3) =0a(4) =17a(5) =6a(6) =115a(7) =100a(8) =867a(9) =1236a(10) =7117a(11) =13770a(12) =62545a(13) =146866a(14) =579387a(15) =1537920a(16) =5581725a(17) =16002810a(18) =55329435a(19) =166465820a(20) =559913787a(21) =1736268432a(22) =5752600961a(23) =18182999274a(24) =59777071435a(25) =191287075320

External references