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, 1, 1), (1, -1, 0), (1, -1, 1)}.
A148760
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, 1, 1), (1, -1, 0), (1, -1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =29a(5) =78a(6) =338a(7) =1058a(8) =4698a(9) =15815a(10) =71857a(11) =254131a(12) =1171908a(13) =4299343a(14) =20033275a(15) =75604044a(16) =355031655a(17) =1370157810a(18) =6473774685a(19) =25439602074a(20) =120803852290a(21) =481857921850
External references
- oeis: A148760