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, 1), (-1, 0, 1), (-1, 1, 1), (1, 1, 0)}.
A149090
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, 1), (-1, 0, 1), (-1, 1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =7a(4) =34a(5) =73a(6) =349a(7) =817a(8) =4042a(9) =10069a(10) =49507a(11) =127873a(12) =636262a(13) =1693573a(14) =8402032a(15) =22820875a(16) =113817454a(17) =314673517a(18) =1566987739a(19) =4389038017a(20) =21914474266a(21) =62104354621a(22) =309818244166a(23) =886054108339
External references
- oeis: A149090