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, 0), (0, -1, 0), (0, 1, -1), (1, 1, 0), (1, 1, 1)}.
A150984
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, 0), (0, -1, 0), (0, 1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =37a(4) =161a(5) =730a(6) =3346a(7) =15546a(8) =73054a(9) =345329a(10) =1643316a(11) =7857545a(12) =37710040a(13) =181626285a(14) =877193333a(15) =4246748517a(16) =20604597884a(17) =100151577356a(18) =487604066498
External references
- oeis: A150984