OFFSET
0,5
COMMENTS
Huff paper has a typographical error, a(8)=2669. - Sean A. Irvine, Dec 14 2014
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
R. Spira, Noncomplete residue systems, Problem 71-4, SIAM Rev., 14 (1972), 173ff.
LINKS
R. K. Guy, Letter to G. B. Huff & N. J. A. Sloane, Aug 1974.
G. B. Huff, On pairings of the first 2n natural numbers, Acta Arithmetica, 23 (1973), 117-126.
D. A. Klarner, Letter to N. J. A. Sloane, Mar 1974.
R. Spira, Noncomplete residue system Problem 71-4, SIAM Rev., 14 (1972), 173-174. (Annotated scanned copy)
CROSSREFS
KEYWORD
nonn,more
AUTHOR
EXTENSIONS
Better definition and values of a(11)-a(15) from Sean A. Irvine, Dec 14 2014
a(0)=1 prepended by Alois P. Heinz, Oct 05 2018
STATUS
approved