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, 0), (0, -1, 0), (1, 1, 0), (1, 1, 1)}.
A151020
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, 0), (0, -1, 0), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =36a(4) =168a(5) =720a(6) =3304a(7) =15088a(8) =69904a(9) =326624a(10) =1535040a(11) =7251968a(12) =34448064a(13) =164071424a(14) =784830976a(15) =3762710272a(16) =18090215424a(17) =87167033856a(18) =420815500544
External references
- oeis: A151020