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, 1), (1, -1, -1), (1, -1, 1), (1, 1, 0)}.
A149196
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, 1), (1, -1, -1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =10a(4) =38a(5) =127a(6) =494a(7) =1810a(8) =7268a(9) =27912a(10) =114154a(11) =451876a(12) =1870214a(13) =7556208a(14) =31544667a(15) =129329742a(16) =543487817a(17) =2252645560a(18) =9516508678a(19) =39775691833a(20) =168765617735a(21) =710070538250
External references
- oeis: A149196