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, 0), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150684
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, 0), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =116a(5) =431a(6) =2007a(7) =7942a(8) =37805a(9) =155192a(10) =748382a(11) =3147062a(12) =15303621a(13) =65462341a(14) =320165531a(15) =1387131405a(16) =6812260393a(17) =29809146844a(18) =146843350287a(19) =647700842194
External references
- oeis: A150684