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, -1), (-1, 0, 1), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
A150751
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, -1), (-1, 0, 1), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =127a(5) =528a(6) =2405a(7) =10591a(8) =49296a(9) =223989a(10) =1056721a(11) =4896369a(12) =23312282a(13) =109466674a(14) =524642598a(15) =2487292994a(16) =11980610025a(17) =57209812926a(18) =276644569342
External references
- oeis: A150751