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, 1, -1), (-1, 1, 1), (0, 1, 1), (1, 0, 0)}.
A149995
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, 1, -1), (-1, 1, 1), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =17a(4) =59a(5) =214a(6) =803a(7) =3084a(8) =12035a(9) =47520a(10) =190175a(11) =767807a(12) =3121485a(13) =12777633a(14) =52607949a(15) =217615055a(16) =903971491a(17) =3770023829a(18) =15776636920a(19) =66218490239a(20) =278713126944
External references
- oeis: A149995