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, 1, 0), (1, 0, -1), (1, 0, 0), (1, 0, 1)}.
A150371
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, 1, 0), (1, 0, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =94a(5) =370a(6) =1604a(7) =6727a(8) =30370a(9) =133713a(10) =615882a(11) =2777178a(12) =13009742a(13) =59927580a(14) =283460002a(15) =1321621492a(16) =6307233267a(17) =29747482950a(18) =142758158057a(19) =678127146675
External references
- oeis: A150371