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, 0), (-1, -1, 1), (-1, 0, -1), (0, -1, 1), (1, 1, 0)}.
A149098
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, 0), (-1, -1, 1), (-1, 0, -1), (0, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =33a(5) =90a(6) =350a(7) =1153a(8) =4325a(9) =15768a(10) =59067a(11) =225556a(12) =860360a(13) =3350183a(14) =13056849a(15) =51412176a(16) =203769224a(17) =810519761a(18) =3249045763a(19) =13052116198a(20) =52740175340a(21) =213719432688a(22) =869252192422
External references
- oeis: A149098