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, 0, 1), (0, 0, -1), (1, 0, -1), (1, 1, 0)}.
A148948
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, 0, 1), (0, 0, -1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =9a(4) =30a(5) =102a(6) =395a(7) =1484a(8) =5924a(9) =23995a(10) =98866a(11) =414472a(12) =1762159a(13) =7556734a(14) =32822931a(15) =143522044a(16) =632885962a(17) =2810022936a(18) =12548457073a(19) =56363964503a(20) =254407136619
External references
- oeis: A148948