Number of symmetrical self-avoiding walks with maximum length on an n X n board which start in the upper left corner and go right on the first step.

A331001

Number of symmetrical self-avoiding walks with maximum length on an n X n board which start in the upper left corner and go right on the first step.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =8a(5) =24a(6) =282a(7) =888a(8) =46933a(9) =238119a(10) =36027060a(11) =187011538a(12) =130162111969

External references