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), (0, 1, -1), (1, 0, 1)}.
A148624
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), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =22a(5) =54a(6) =212a(7) =601a(8) =2419a(9) =7359a(10) =30707a(11) =98305a(12) =415115a(13) =1386984a(14) =5944884a(15) =20395903a(16) =88370175a(17) =311007253a(18) =1357288223a(19) =4866804666a(20) =21404173960a(21) =77985019982a(22) =344771120040
External references
- oeis: A148624