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), (0, -1, 1), (0, 1, -1), (1, 0, 0)}.
A148844
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), (0, -1, 1), (0, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =27a(5) =96a(6) =361a(7) =1409a(8) =5650a(9) =23184a(10) =96687a(11) =409555a(12) =1754124a(13) =7592661a(14) =33139803a(15) =145727381a(16) =644928721a(17) =2870241308a(18) =12837405152a(19) =57669438763a(20) =260088377628
External references
- oeis: A148844