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), (0, 1, -1), (1, 0, 1)}.
A149341
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), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =41a(5) =150a(6) =568a(7) =2173a(8) =8481a(9) =33756a(10) =135463a(11) =547375a(12) =2233624a(13) =9174167a(14) =37848374a(15) =156914675a(16) =653597162a(17) =2731737145a(18) =11452844102a(19) =48166309663a(20) =203115207619a(21) =858494466299
External references
- oeis: A149341