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, 0, 0), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.
A148626
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, 0, 0), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =22a(5) =54a(6) =212a(7) =601a(8) =2431a(9) =7371a(10) =30743a(11) =98770a(12) =417771a(13) =1390810a(14) =5974821a(15) =20539012a(16) =88992084a(17) =312709891a(18) =1367861944a(19) =4906398433a(20) =21585896310a(21) =78599131241a(22) =348033315481
External references
- oeis: A148626