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A262584 (A002704(n)-2)/2. 3
0, 12, 468, 21399, 1065228, 55778796, 3020636340, 167544629316, 9461343754980, 541786421337804, 31372013730812823, 1833216802356228732, 107939805322734748116, 6396432908013911687436, 381139174656828902370420 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..14.

Rosa, Alexander; Znam, Stefan, A combinatorial problem in the theory of congruences (Russian with English summary), Mat.-Fys. Casopis Sloven. Akad. Vied 15 1965 49-59. [Annotated scanned copy.]

Rosa, Alexander; Znam, Stefan, A remark on a combinatorial problem (Russian with English summary), Mat.-Fyz. Casopis Sloven. Akad. Vied 15 1965 313-316. [Annotated scanned copy] See Table 3.

CROSSREFS

Cf. A002704, A262570, A262583.

Sequence in context: A302945 A089956 A178217 * A241226 A003749 A012395

Adjacent sequences:  A262581 A262582 A262583 * A262585 A262586 A262587

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 20 2015

EXTENSIONS

More terms from R. J. Mathar, Oct 21 2015

STATUS

approved

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Last modified May 28 15:33 EDT 2020. Contains 334684 sequences. (Running on oeis4.)