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A085416 Take prime[n] and continue adding 1,2,..., A085415(n) until one reaches a prime a(n). 4
3, 13, 11, 13, 17, 19, 23, 29, 29, 107, 37, 43, 47, 53, 53, 59, 137, 67, 73, 107, 79, 89, 89, 167, 103, 107, 109, 113, 137, 149, 137, 137, 173, 149, 227, 157, 163, 173, 173, 179, 257, 191, 197, 199, 233, 227, 239, 229, 233, 239, 239, 317, 251, 257, 263, 269, 347 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Primes resulting in procedure of A085415. See also A085417, A085418.
LINKS
EXAMPLE
a(2)=13 because prime[2]=3 and 3+(1+2+3+4)=3+10=13 is a prime.
MATHEMATICA
Table[SelectFirst[Prime[n]+Accumulate[Range[20]], PrimeQ], {n, 60}] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Aug 11 2019 *)
CROSSREFS
Sequence in context: A136592 A351657 A340441 * A107802 A142351 A272837
KEYWORD
easy,nonn
AUTHOR
Zak Seidov, Jun 29 2003
STATUS
approved

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)