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A053608 Numbers x=LCM(1,2,...,n) such that x^2 + 1 is prime. 1
1, 2, 6, 420, 360360, 718766754945489455304472257065075294400 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
A003418, A051451, A049536, A046029, A051739, A053609.
Sequence in context: A092024 A252741 A069261 * A199239 A123261 A124061
Adjacent sequences: A053605 A053606 A053607 * A053609 A053610 A053611
KEYWORD
nonn
AUTHOR
Labos Elemer, Feb 09 2000
STATUS
approved

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Last modified May 14 22:35 EDT 2024. Contains 372533 sequences. (Running on oeis4.)