
REFERENCES

Rosa, Alexander; Znam, Stefan; A combinatorial problem in the theory of congruences. (Russian) Mat.Fys. Casopis Sloven. Akad. Vied 15 1965 4959.
Rosa, Alexander; Znam, Stefan; A remark on a combinatorial problem. (Russian) Mat.Fyz. Casopis Sloven. Akad. Vied 15 1965 313316.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
