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, 0, 1), (-1, 1, 0), (1, 0, 1), (1, 1, 0)}.
A150703
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, 0, 1), (-1, 1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =122a(5) =448a(6) =2152a(7) =8472a(8) =41248a(9) =168404a(10) =828858a(11) =3464842a(12) =17127182a(13) =72901650a(14) =361432694a(15) =1558479474a(16) =7746534534a(17) =33739814458a(18) =167937821994a(19) =737581929028
External references
- oeis: A150703