The number of stable vertically balanced self-avoiding walks of length n on the upper half-plane of a 2D square lattice where the nodes and connecting rods have equal mass.

A337317

The number of stable vertically balanced self-avoiding walks of length n on the upper half-plane of a 2D square lattice where the nodes and connecting rods have equal mass.

Terms

    a(0) =2a(1) =4a(2) =10a(3) =24a(4) =60a(5) =138a(6) =348a(7) =832a(8) =2104a(9) =5192a(10) =13178a(11) =32662a(12) =82890a(13) =207888a(14) =529738a(15) =1339188a(16) =3424526a(17) =8698382a(18) =22294906a(19) =56836056a(20) =145982928a(21) =373363770a(22) =960834764a(23) =2463930512a(24) =6351046936a(25) =16322104184a(26) =42131167144a(27) =108478565772a(28) =280360764620

External references