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, 0, 1), (-1, 1, 0), (1, 0, 0)}.
A148525
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, 0, 1), (-1, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =39a(6) =155a(7) =349a(8) =1479a(9) =3563a(10) =15379a(11) =38565a(12) =171419a(13) =444599a(14) =1995573a(15) =5293969a(16) =24162775a(17) =65414979a(18) =300369323a(19) =825087805a(20) =3829666443a(21) =10663797479a(22) =49698443321a(23) =139801125261a(24) =656457182899
External references
- oeis: A148525