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, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
A149316
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, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =50a(5) =184a(6) =876a(7) =3621a(8) =17556a(9) =76922a(10) =376482a(11) =1708220a(12) =8409404a(13) =39041608a(14) =192940484a(15) =910081407a(16) =4509550244a(17) =21515942178a(18) =106817895330a(19) =514014162986
External references
- oeis: A149316