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, 0), (-1, 0, 1), (-1, 1, -1), (-1, 1, 0), (1, 0, 0)}.
A148529
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, 0), (-1, 0, 1), (-1, 1, -1), (-1, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =39a(6) =160a(7) =363a(8) =1563a(9) =3779a(10) =16780a(11) =42371a(12) =192044a(13) =500434a(14) =2303127a(15) =6147873a(16) =28618129a(17) =77852757a(18) =365637202a(19) =1010042925a(20) =4777539602a(21) =13365767718a(22) =63586163133a(23) =179792193630a(24) =859444875265
External references
- oeis: A148529