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A120313 a(n) = Product of k primes in arithmetic progression with common difference 6, otherwise a(n) = prime(n). 0
2, 3, 623645, 124729, 11339, 19, 667, 29, 49321, 1591, 43, 146969, 3127, 59, 23569729, 386389, 71, 5767 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(2) = 3 because 3+6 = 9 and is not prime;
a(3) = 623645 = 5*11*17*23*29 and the common difference between successive primes is 6.
CROSSREFS
Sequence in context: A038537 A338404 A235984 * A216981 A307255 A176649
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Jun 20 2006
STATUS
approved

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Last modified July 15 11:27 EDT 2024. Contains 374332 sequences. (Running on oeis4.)