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), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
A150652
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), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =28a(4) =119a(5) =520a(6) =2346a(7) =10755a(8) =49917a(9) =234022a(10) =1105325a(11) =5252101a(12) =25078973a(13) =120239390a(14) =578443647a(15) =2790846344a(16) =13498704672a(17) =65431808670a(18) =317767458122
External references
- oeis: A150652