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), (0, 1, -1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
A150618
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), (0, 1, -1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =486a(6) =2149a(7) =9656a(8) =44163a(9) =203866a(10) =950665a(11) =4463267a(12) =21077735a(13) =100056766a(14) =476950749a(15) =2281932825a(16) =10952902235a(17) =52716305762a(18) =254356037461
External references
- oeis: A150618