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, 0, 0), (-1, 0, 1), (0, 1, -1), (1, -1, 1), (1, 0, 1)}.
A149365
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, 0, 0), (-1, 0, 1), (0, 1, -1), (1, -1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =44a(5) =171a(6) =683a(7) =2816a(8) =11893a(9) =51350a(10) =224098a(11) =991506a(12) =4437757a(13) =20006333a(14) =90924488a(15) =415980396a(16) =1913682104a(17) =8847746238a(18) =41091054180a(19) =191607760032a(20) =896578541595
External references
- oeis: A149365