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A057224 Numbers n such that (Product of first n Mersenne prime exponents) + 1 is prime. 1
1, 2, 3, 4, 5, 6, 13, 17 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..8.

PROG

lista(v) = {for (n=1, #v, if (isprime(prod(k=1, n, v[k]) + 1), print1(n, ", ")); ); } \\ with v=A000043; Michel Marcus, Jan 07 2014

CROSSREFS

Cf. A000043, A057225.

Sequence in context: A072564 A223938 A222194 * A153695 A300857 A255261

Adjacent sequences:  A057221 A057222 A057223 * A057225 A057226 A057227

KEYWORD

nonn

AUTHOR

G. L. Honaker, Jr., Sep 18 2000

STATUS

approved

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Last modified July 23 12:19 EDT 2021. Contains 346259 sequences. (Running on oeis4.)