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A342453
When A342439(n) is the largest prime < 10^n obtained with the longest sum of the A342440(n) consecutive primes, then a(n) is the first prime of these A342440(n) consecutive primes.
4
2, 2, 7, 3, 3, 7, 7, 7, 11, 2, 19, 5, 5, 2, 13, 5, 5, 7, 11
OFFSET
1,1
COMMENTS
Inspired by the 50th problem of Project Euler (see link).
There must be at least two consecutive primes in the sum.
The terms a(4)-a(17) come from the Perl program and the results proposed by Daniel Suteu in the link Archive.today.
EXAMPLE
A342439(2) = 41 = 2 + 3 + 5 + 7 + 11 + 13 hence a(2) = 2.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Bernard Schott, Mar 14 2021
EXTENSIONS
a(4)-a(17) from Daniel Suteu, Mar 14 2021
a(18)-a(19) from Martin Ehrenstein, Mar 14 2021
a(7) and a(15) corrected by Martin Ehrenstein, Mar 14 2021
STATUS
approved