A262591 Sets with a congruence property.

0, 0, 4, 16, 60, 208, 726, 2568, 9196, 33286, 121572, 447392, 1657006, 6170928, 23091220, 86767014, 327235608, 1238188768, 4698767638

Offset

3,3

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: A055295 A121254 A261519 * A119827 A089883 A089932

Adjacent sequences: A262588 A262589 A262590 * A262592 A262593 A262594

Keyword

nonn

Author

R. J. Mathar, Oct 21 2015

Status

approved