A262583 a(n) = A002704(n)-2.

0, 24, 936, 42798, 2130456, 111557592, 6041272680, 335089258632, 18922687509960, 1083572842675608, 62744027461625646, 3666433604712457464, 215879610645469496232, 12792865816027823374872, 762278349313657804740840, 45638342462133835019322552

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Alexander Rosa and Štefan Znám, 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.]

Alexander Rosa and Štefan Znám, 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, A262584.

Sequence in context: A172206 A220804 A220253 * A001866 A033590 A174586

Adjacent sequences: A262580 A262581 A262582 * A262584 A262585 A262586

Keyword

nonn

Author

N. J. A. Sloane, Oct 20 2015

Extensions

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

a(15) corrected by Georg Fischer, Jun 27 2020

Status

approved