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), (0, 1, -1), (1, 0, 0), (1, 0, 1), (1, 1, 1)}.
A151190
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), (0, 1, -1), (1, 0, 0), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =52a(4) =233a(5) =1083a(6) =5100a(7) =24295a(8) =116918a(9) =565724a(10) =2752468a(11) =13446199a(12) =65884595a(13) =323738565a(14) =1594128852a(15) =7864002439a(16) =38855552063a(17) =192229773083a(18) =952108277471
External references
- oeis: A151190