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), (0, 0, 1), (0, 1, -1), (1, -1, 1), (1, 1, 1)}.
A150884
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), (0, 0, 1), (0, 1, -1), (1, -1, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =150a(5) =684a(6) =3229a(7) =15298a(8) =73626a(9) =355375a(10) =1729522a(11) =8436439a(12) =41348599a(13) =203019209a(14) =999765220a(15) =4930173250a(16) =24359727084a(17) =120490798599a(18) =596787779737
External references
- oeis: A150884