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, 1), (1, 0, 0)}.
A148553
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, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =21a(5) =44a(6) =194a(7) =447a(8) =2101a(9) =5180a(10) =24492a(11) =62732a(12) =303517a(13) =802983a(14) =3894196a(15) =10523303a(16) =51582319a(17) =142052662a(18) =697150478a(19) =1946133690a(20) =9605129559a(21) =27147409827a(22) =134087618348a(23) =382585252981
External references
- oeis: A148553