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, 1), (-1, 1, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
A148170
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, 1), (-1, 1, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =11a(5) =32a(6) =101a(7) =335a(8) =1160a(9) =4173a(10) =15440a(11) =58553a(12) =226598a(13) =892671a(14) =3571202a(15) =14476138a(16) =59374785a(17) =246066600a(18) =1029190063a(19) =4340404260a(20) =18441133536a(21) =78878447049a(22) =339449124384
External references
- oeis: A148170