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), (0, 1, -1), (1, 0, 1)}.
A148086
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), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =22a(6) =59a(7) =149a(8) =396a(9) =1041a(10) =2907a(11) =7760a(12) =21816a(13) =60298a(14) =169741a(15) =475054a(16) =1359128a(17) =3816950a(18) =10972685a(19) =31304334a(20) =89879700a(21) =257711500a(22) =747124581a(23) =2144777317a(24) =6229523512a(25) =18035524556a(26) =52361269786a(27) =152014079572a(28) =443837403206
External references
- oeis: A148086