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), (0, 1, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A151017
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), (0, 1, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =39a(4) =186a(5) =882a(6) =4307a(7) =21010a(8) =103692a(9) =511773a(10) =2539439a(11) =12603464a(12) =62722473a(13) =312217229a(14) =1556418854a(15) =7760380972a(16) =38725714681a(17) =193279301481a(18) =965122674081
External references
- oeis: A151017