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, 0, 1), (0, -1, 1), (0, 1, -1), (1, 0, 0)}.
A148100
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, 0, 1), (0, -1, 1), (0, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =76a(7) =239a(8) =753a(9) =2540a(10) =8572a(11) =30128a(12) =106501a(13) =387844a(14) =1422789a(15) =5316121a(16) =20099588a(17) =76671429a(18) =296355338a(19) =1151184226a(20) =4524804463a(21) =17853802855a(22) =71134139857a(23) =284557313732
External references
- oeis: A148100