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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A006187 Number of pair-coverings with largest block size 5. (Formerly M4081) 0 1, 6, 10, 13, 15, 16, 16, 18 (list; graph; refs; listen; history; text; internal format) OFFSET 5,2 REFERENCES N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). R. G. Stanton, J. L. Allston and D. D. Cowan, Pair-coverings with restricted largest block length, Ars Combin., 11 (1981), 85-98. LINKS Table of n, a(n) for n=5..12. R. G. Stanton, J. L. Allston and D. D. Cowan, Pair-coverings with restricted largest block length, Ars Combin., 11 (1981), 85-98. (Annotated scanned copy) CROSSREFS Sequence in context: A107371 A340874 A213428 * A346958 A288222 A004234 Adjacent sequences: A006184 A006185 A006186 * A006188 A006189 A006190 KEYWORD nonn AUTHOR N. J. A. Sloane. STATUS approved

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Last modified August 18 12:24 EDT 2024. Contains 375269 sequences. (Running on oeis4.)