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A262591 Sets with a congruence property. 0
0, 0, 4, 16, 60, 208, 726, 2568, 9196, 33286, 121572, 447392, 1657006, 6170928, 23091220, 86767014, 327235608, 1238188768, 4698767638 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

LINKS

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

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 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

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Last modified July 21 19:25 EDT 2019. Contains 325199 sequences. (Running on oeis4.)