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), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A149655
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), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =15a(4) =75a(5) =289a(6) =1445a(7) =6095a(8) =30475a(9) =135117a(10) =675585a(11) =3087987a(12) =15439935a(13) =72008619a(14) =360043095a(15) =1703029437a(16) =8515147185a(17) =40694381623a(18) =203471908115a(19) =979988489573
External references
- oeis: A149655