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, 0), (0, 0, 1), (1, -1, 1), (1, 0, -1), (1, 1, 1)}.
A150872
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, 0), (0, 0, 1), (1, -1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =146a(5) =658a(6) =3029a(7) =14115a(8) =66456a(9) =315187a(10) =1503673a(11) =7206799a(12) =34672709a(13) =167340770a(14) =809789185a(15) =3927612703a(16) =19087000864a(17) =92915803145a(18) =452996664725
External references
- oeis: A150872