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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
A148101
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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =77a(7) =231a(8) =731a(9) =2363a(10) =7920a(11) =27084a(12) =94817a(13) =336983a(14) =1216568a(15) =4453388a(16) =16502271a(17) =61814816a(18) =233856348a(19) =892573723a(20) =3434288432a(21) =13314937000a(22) =51972107496a(23) =204140373934a(24) =806591451331
External references
- oeis: A148101