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, 1, -1), (0, 0, 1), (1, 0, 0), (1, 1, 0)}.
A151071
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, 1, -1), (0, 0, 1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =39a(4) =161a(5) =688a(6) =3030a(7) =13679a(8) =62583a(9) =289432a(10) =1352823a(11) =6371322a(12) =30171367a(13) =143636119a(14) =686989470a(15) =3297242248a(16) =15873914485a(17) =76644248698a(18) =370959805872
External references
- oeis: A151071