1,4

G. B. Huff, On pairings of the first 2n natural numbers, Acta Arithmetica, 23 (1973), 117-126.

R. Spira, Noncomplete residue systems, Problem 71-4, SIAM Rev., 14 (1972), 173ff.

Sequence in context: A112684 A048489 A124701 this_sequence A058404 A126362 A140418

Adjacent sequences: A002965 A002966 A002967 this_sequence A002969 A002970 A002971

nonn

njas