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, 0), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
A150795
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, 0), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =130a(5) =562a(6) =2504a(7) =11349a(8) =52133a(9) =242147a(10) =1134569a(11) =5349564a(12) =25364039a(13) =120833817a(14) =577944794a(15) =2773523513a(16) =13349920977a(17) =64426566906a(18) =311621092011
External references
- oeis: A150795