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, 1, -1), (0, 0, 1), (0, 1, -1), (1, 0, -1)}.
A148516
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, 1, -1), (0, 0, 1), (0, 1, -1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =17a(5) =38a(6) =135a(7) =365a(8) =1273a(9) =3875a(10) =13381a(11) =44093a(12) =153435a(13) =529449a(14) =1869835a(15) =6615117a(16) =23771839a(17) =85625504a(18) =312516149a(19) =1142610611a(20) =4216910530a(21) =15617929355a(22) =58165740582a(23) =217808128603a(24) =818152635521
External references
- oeis: A148516