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, 1), (0, -1, 1), (0, 0, 1), (1, 1, 0)}.
A150231
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, 1), (0, -1, 1), (0, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =82a(5) =322a(6) =1298a(7) =5350a(8) =22426a(9) =94916a(10) =406746a(11) =1757974a(12) =7645144a(13) =33472572a(14) =147357332a(15) =651595382a(16) =2893278634a(17) =12896473212a(18) =57673136376a(19) =258672021290
External references
- oeis: A150231