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, 1, -1), (0, 0, -1), (1, 0, 1)}.
A148534
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, 1, -1), (0, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =45a(6) =161a(7) =437a(8) =1551a(9) =4933a(10) =17139a(11) =57359a(12) =198625a(13) =705297a(14) =2502895a(15) =8975677a(16) =32125405a(17) =117179077a(18) =431439211a(19) =1588283741a(20) =5873826435a(21) =21780489477a(22) =81834285257a(23) =307828951821
External references
- oeis: A148534