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), (0, 1, 1), (1, -1, 0), (1, 1, 1)}.
A150749
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), (0, 1, 1), (1, -1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =127a(5) =526a(6) =2420a(7) =10624a(8) =49846a(9) =226007a(10) =1074831a(11) =4975408a(12) =23852322a(13) =111962249a(14) =540110364a(15) =2561114007a(16) =12409220893a(17) =59286982781a(18) =288292731330
External references
- oeis: A150749