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), (0, 0, -1), (0, 1, -1), (0, 1, 0), (1, 0, 0)}.
A149833
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), (0, 0, -1), (0, 1, -1), (0, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =30a(5) =94a(6) =309a(7) =1068a(8) =3798a(9) =13854a(10) =51834a(11) =197150a(12) =761151a(13) =2984766a(14) =11841509a(15) =47428821a(16) =191899909a(17) =783286480a(18) =3219622765a(19) =13325287138a(20) =55516004988a(21) =232584392264a(22) =979365099918
External references
- oeis: A149833