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, 0), (-1, -1, 1), (-1, 0, -1), (0, 1, 0), (1, -1, 0)}.
A148046
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, 0), (-1, -1, 1), (-1, 0, -1), (0, 1, 0), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =10a(5) =20a(6) =58a(7) =129a(8) =456a(9) =1134a(10) =3548a(11) =9794a(12) =33807a(13) =96578a(14) =306887a(15) =967425a(16) =3255598a(17) =10137930a(18) =32871380a(19) =110954830a(20) =371459199a(21) =1212221590a(22) =4058086695a(23) =14072357534a(24) =47559861357a(25) =159489386798a(26) =550988433164
External references
- oeis: A148046