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, 0, 1), (0, -1, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
A150568
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, 0, 1), (0, -1, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =107a(5) =462a(6) =2053a(7) =9357a(8) =43312a(9) =203180a(10) =962555a(11) =4596511a(12) =22091572a(13) =106733036a(14) =517927304a(15) =2522423944a(16) =12322749650a(17) =60357919187a(18) =296304581671
External references
- oeis: A150568