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), (0, 0, -1), (0, 0, 1), (0, 1, 1), (1, 1, -1)}.
A150674
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), (0, 0, -1), (0, 0, 1), (0, 1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =108a(5) =416a(6) =1772a(7) =7408a(8) =32280a(9) =140864a(10) =626416a(11) =2802480a(12) =12671872a(13) =57632544a(14) =264001184a(15) =1215240512a(16) =5623292864a(17) =26126758656a(18) =121874499712a(19) =570451075712
External references
- oeis: A150674