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), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.
A149307
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), (-1, 1, 1), (1, -1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =48a(5) =158a(6) =716a(7) =2573a(8) =12062a(9) =45986a(10) =217794a(11) =859062a(12) =4122214a(13) =16719152a(14) =80603908a(15) =333063447a(16) =1616114454a(17) =6786750602a(18) =33020872398a(19) =140310630492a(20) =685241305096
External references
- oeis: A149307