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, 0, 1), (-1, 1, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
A149482
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, 0, 1), (-1, 1, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =58a(5) =226a(6) =1055a(7) =4519a(8) =21614a(9) =97094a(10) =471010a(11) =2178613a(12) =10660517a(13) =50257832a(14) =247314696a(15) =1181334243a(16) =5835644820a(17) =28137910424a(18) =139376200116a(19) =676714986878
External references
- oeis: A149482