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A083409 Number of prime k-tuplet constellations, i.e., patterns with minimal diameter A008407. 5
1, 2, 1, 2, 1, 2, 3, 4, 2, 2, 2, 6, 2, 4, 2, 4, 2, 4, 2, 2, 4, 2, 4, 18, 2, 8, 10, 2, 2, 2, 4, 14, 20, 2, 2, 2, 6, 26, 26, 8, 2, 6, 18, 4, 4, 4, 2, 2, 22, 22, 2, 2, 26, 6, 6, 2, 2, 4, 2, 2, 6, 2, 2, 2, 2, 18, 2, 20, 2, 2, 2, 10, 2, 14, 14, 40, 8, 2, 14, 14, 16, 4, 2, 2, 60, 50, 2, 2, 2, 16, 2, 18, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,2
LINKS
T. D. Noe, Table of n, a(n) for n=2..305 (from Engelsma's data)
Thomas J Engelsma, Permissible Patterns.
Eric Weisstein's World of Mathematics, k-Tuple Conjecture.
EXAMPLE
For a(8) = 3 octuplet patterns see A065706. for a(6) = 1 sextet see A061671.
CROSSREFS
Sequence in context: A074641 A069003 A087855 * A344779 A317586 A303780
KEYWORD
nonn
AUTHOR
Frank Ellermann, Jun 07 2003
EXTENSIONS
More terms from Engelsma's website sent by T. D. Noe, Jul 21 2006
STATUS
approved

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Last modified April 23 20:27 EDT 2024. Contains 371916 sequences. (Running on oeis4.)