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, 0), (1, -1, 1), (1, 0, -1), (1, 0, 1)}.
A150625
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, 0), (1, -1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =492a(6) =2199a(7) =10018a(8) =46265a(9) =215978a(10) =1016645a(11) =4817665a(12) =22954305a(13) =109859680a(14) =527770605a(15) =2543501545a(16) =12291399297a(17) =59537652888a(18) =288982816863
External references
- oeis: A150625