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, 0, 0), (0, -1, 1), (1, 1, 0), (1, 1, 1)}.
A150924
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, 0, 0), (0, -1, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =33a(4) =147a(5) =639a(6) =2866a(7) =13157a(8) =60394a(9) =282158a(10) =1322334a(11) =6237030a(12) =29606868a(13) =140835340a(14) =673495024a(15) =3227042178a(16) =15511352835a(17) =74730396260a(18) =360726910545
External references
- oeis: A150924