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, 1, -1), (1, -1, -1), (1, 1, 0)}.
A148528
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, 1, -1), (1, -1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =39a(6) =155a(7) =369a(8) =1511a(9) =3999a(10) =16699a(11) =47411a(12) =201035a(13) =598115a(14) =2566823a(15) =7913909a(16) =34278307a(17) =108842863a(18) =474944507a(19) =1544928203a(20) =6783383171a(21) =22505843739a(22) =99339846735a(23) =335133673283
External references
- oeis: A148528