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, 0), (0, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A150894
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, 0), (0, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =155a(5) =720a(6) =3415a(7) =16383a(8) =79328a(9) =386470a(10) =1891850a(11) =9294566a(12) =45795647a(13) =226153248a(14) =1118854674a(15) =5543559786a(16) =27500181154a(17) =136560136318a(18) =678706790731
External references
- oeis: A150894