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, 0, 1), (1, -1, -1), (1, 0, -1), (1, 1, 1)}.
A149620
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, 0, 1), (1, -1, -1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =15a(4) =65a(5) =243a(6) =1063a(7) =4339a(8) =19235a(9) =82027a(10) =367879a(11) =1609567a(12) =7285259a(13) =32414039a(14) =147766247a(15) =665264845a(16) =3049902451a(17) =13851990637a(18) =63793187083a(19) =291697457499
External references
- oeis: A149620