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, 0), (-1, 1, -1), (0, 1, -1), (1, 0, 1)}.
A148651
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, 0), (-1, 1, -1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =24a(5) =64a(6) =225a(7) =744a(8) =2702a(9) =9380a(10) =34049a(11) =127464a(12) =472776a(13) =1769652a(14) =6775136a(15) =26075746a(16) =100305210a(17) =389461385a(18) =1532644757a(19) =6016110125a(20) =23710831146a(21) =94354307856a(22) =376564777974
External references
- oeis: A148651