Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}.
A148542
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =45a(6) =167a(7) =463a(8) =1793a(9) =5367a(10) =21663a(11) =67869a(12) =277523a(13) =913303a(14) =3793339a(15) =12874443a(16) =54336549a(17) =188121521a(18) =800614509a(19) =2837898753a(20) =12174976035a(21) =43898976077a(22) =189960369635a(23) =692886217669
External references
- oeis: A148542