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, 0), (-1, 1, 0), (0, 0, 1), (1, 0, -1)}.
A148285
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, 0), (-1, 1, 0), (0, 0, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =12a(5) =32a(6) =97a(7) =287a(8) =885a(9) =2942a(10) =9626a(11) =32224a(12) =112848a(13) =391780a(14) =1383228a(15) =5015230a(16) =18110192a(17) =66321124a(18) =246631856a(19) =916229990a(20) =3444243002a(21) =13061422067a(22) =49585368476a(23) =190049612386a(24) =732135773261
External references
- oeis: A148285