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, 1), (-1, 1, -1), (1, -1, -1), (1, 0, 0)}.
A148010
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, 1), (-1, 1, -1), (1, -1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =8a(5) =15a(6) =44a(7) =101a(8) =334a(9) =817a(10) =2752a(11) =7084a(12) =24607a(13) =67680a(14) =245864a(15) =697772a(16) =2553885a(17) =7409054a(18) =27480303a(19) =82521955a(20) =313794525a(21) =959852546a(22) =3664001178a(23) =11345504079a(24) =43619693769a(25) =138028015239a(26) =539448885144
External references
- oeis: A148010