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, 1, -1), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.
A150383
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, 1, -1), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =97a(5) =380a(6) =1707a(7) =7232a(8) =33490a(9) =148286a(10) =698883a(11) =3181169a(12) =15165513a(13) =70328453a(14) =337942000a(15) =1588039719a(16) =7674943256a(17) =36419812699a(18) =176783893031a(19) =845159746620
External references
- oeis: A150383