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, 1, 1), (0, 0, -1), (1, 0, -1), (1, 0, 0)}.
A148386
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, 1, 1), (0, 0, -1), (1, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =16a(5) =51a(6) =169a(7) =564a(8) =2046a(9) =7548a(10) =28355a(11) =106596a(12) =411047a(13) =1612830a(14) =6399150a(15) =25472182a(16) =102322757a(17) =415580010a(18) =1702115777a(19) =6999101160a(20) =28909694958a(21) =120178955216a(22) =502695571138
External references
- oeis: A148386