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, 0), (-1, 1, -1), (1, 0, -1), (1, 0, 1)}.
A149126
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, 0), (-1, 1, -1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =9a(4) =34a(5) =103a(6) =399a(7) =1329a(8) =5420a(9) =19005a(10) =79683a(11) =292567a(12) =1246622a(13) =4721185a(14) =20426140a(15) =79079933a(16) =346099728a(17) =1365633469a(18) =6028191661a(19) =24148242373a(20) =107405519254a(21) =435530918701
External references
- oeis: A149126