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, -1, 1), (-1, 1, 0), (1, 0, 1), (1, 1, 0)}.
A150386
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, -1, 1), (-1, 1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =100a(5) =368a(6) =1686a(7) =6656a(8) =31226a(9) =127887a(10) =609765a(11) =2559417a(12) =12319958a(13) =52642465a(14) =255233171a(15) =1104774994a(16) =5383290940a(17) =23543707785a(18) =115154181131a(19) =507764596679
External references
- oeis: A150386