A262590 Sets with a congruence property.

0, 2, 6, 18, 62, 210, 728, 2570, 9198, 33288, 121574, 447394, 1657008, 6170930, 23091222, 86767016, 327235610, 1238188770, 4698767640

Offset

3,2

Links

Table of n, a(n) for n=3..21.

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 1.

Formula

See Maple code in A002705.

Crossrefs

Sequence in context: A177471 A303117 A150052 * A150053 A150054 A067052

Adjacent sequences: A262587 A262588 A262589 * A262591 A262592 A262593

Keyword

nonn

Author

R. J. Mathar, Oct 21 2015

Status

approved