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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A005273 (5,4)-graphs. (Formerly M0918) 4 1, 2, 3, 16, 423, 5337932, 198815685282 (list; graph; refs; listen; history; text; internal format) OFFSET 3,2 REFERENCES R. E. Peile, Some Topics in Combinatorial Theory. Ph. D. Dissertation, Oxford University, 1979. N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS Table of n, a(n) for n=3..9. R. E. Peile, Letter to N. J. A. Sloane, Feb 1989 CROSSREFS Sequence in context: A057997 A290590 A263802 * A171990 A103898 A140383 Adjacent sequences: A005270 A005271 A005272 * A005274 A005275 A005276 KEYWORD nonn AUTHOR N. J. A. Sloane. STATUS approved

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Last modified July 18 17:25 EDT 2024. Contains 374388 sequences. (Running on oeis4.)