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, -1, 0), (-1, 0, 1), (1, 0, 1), (1, 1, 0)}.
A150376
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, -1, 0), (-1, 0, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =96a(5) =354a(6) =1558a(7) =6126a(8) =27515a(9) =112507a(10) =512529a(11) =2147588a(12) =9885539a(13) =42148934a(14) =195391127a(15) =844315803a(16) =3934322576a(17) =17179647304a(18) =80384018006a(19) =353955909902
External references
- oeis: A150376