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, 1), (0, -1, 1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
A150488
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, 1), (0, -1, 1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =100a(5) =412a(6) =1779a(7) =7803a(8) =35079a(9) =159295a(10) =734078a(11) =3405847a(12) =15954046a(13) =75093312a(14) =355799969a(15) =1691811412a(16) =8083002248a(17) =38723201635a(18) =186174797728a(19) =897005474453
External references
- oeis: A150488