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, 0, 1), (0, -1, 1), (0, 1, 0), (1, 1, 0)}.
A150346
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, 0, 1), (0, -1, 1), (0, 1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =90a(5) =355a(6) =1464a(7) =6118a(8) =26104a(9) =113015a(10) =493445a(11) =2176366a(12) =9662238a(13) =43207699a(14) =194076432a(15) =876203269a(16) =3971292756a(17) =18066354458a(18) =82435993765a(19) =377251260801
External references
- oeis: A150346