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), (0, 1, 0), (1, 0, 1)}.
A150627
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), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =114a(5) =491a(6) =2198a(7) =9952a(8) =45968a(9) =213736a(10) =1005480a(11) =4750627a(12) =22614664a(13) =107982503a(14) =518261359a(15) =2493012783a(16) =12036564862a(17) =58215057283a(18) =282333566359
External references
- oeis: A150627