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, -1), (-1, -1, 0), (-1, 0, 1), (-1, 1, -1), (1, 0, 0)}.
A148007
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, -1), (-1, -1, 0), (-1, 0, 1), (-1, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =8a(5) =15a(6) =44a(7) =91a(8) =314a(9) =717a(10) =2462a(11) =5786a(12) =20723a(13) =50596a(14) =188018a(15) =473183a(16) =1804072a(17) =4645335a(18) =17787660a(19) =46419584a(20) =181375177a(21) =481275126a(22) =1911271468a(23) =5141399599a(24) =20539168658a(25) =55762292565a(26) =224393416829a(27) =614548182426
External references
- oeis: A148007