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, 0), (-1, 0, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A150958
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, 0), (-1, 0, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =35a(4) =161a(5) =703a(6) =3308a(7) =15122a(8) =72146a(9) =337554a(10) =1624538a(11) =7708209a(12) =37313224a(13) =178711601a(14) =868676024a(15) =4188241305a(16) =20421625766a(17) =98946491428a(18) =483640505326
External references
- oeis: A150958