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), (0, 1, -1), (1, 0, 0)}.
A148078
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), (0, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =24a(6) =60a(7) =187a(8) =533a(9) =1633a(10) =5160a(11) =15870a(12) =53517a(13) =171668a(14) =585244a(15) =1975988a(16) =6674839a(17) =23482783a(18) =80233596a(19) =286909515a(20) =1007392268a(21) =3586586050a(22) =12951852657a(23) =46106951430a(24) =169300422921a(25) =610788829219
External references
- oeis: A148078