3,2
H. L. Abbott and D. Hanson, A lattice path problem, Ars Combin., 6 (1978), 163-178.
Sequence in context: A100442 A018191 A081126 this_sequence A120899 A141754 A052836
Adjacent sequences: A006188 A006189 A006190 this_sequence A006192 A006193 A006194
nonn,walk
njas
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