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, 0, 1), (1, 1, -1), (1, 1, 1)}.
A150897
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, 0, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =156a(5) =718a(6) =3422a(7) =16334a(8) =79118a(9) =384020a(10) =1878350a(11) =9201068a(12) =45268796a(13) =223004070a(14) =1101463614a(15) =5445866142a(16) =26971500686a(17) =133688792364a(18) =663414638696
External references
- oeis: A150897