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, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1)}.
A148298
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, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =36a(6) =112a(7) =350a(8) =1155a(9) =3925a(10) =13579a(11) =48220a(12) =173836a(13) =635911a(14) =2360420a(15) =8850743a(16) =33549545a(17) =128312974a(18) =494688957a(19) =1921574844a(20) =7512968389a(21) =29555315723a(22) =116910451943a(23) =464810687871
External references
- oeis: A148298