OFFSET
1,1
COMMENTS
From an idea of Eric Angelini with additional terms from D. S. McNeil.
The partial sums of the sequence are 2, 3, 7, 13, 16, 23, 31, 41, 52, ...
The sequence is self-descriptive and says that the 2nd, 1st, 4th, 6th, 3rd, 7th, etc, term in the partial sums, namely 3, 2, 13, 23, 7, 31 etc, are primes.
LINKS
Neal Gersh Tolunsky, Table of n, a(n) for n = 1..10000
Eric Angelini, The sum of the a(n) first digits of S is a prime
Eric Angelini, The sum of the a(n) first digits of S is a prime [Cached copy, with permission]
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paolo P. Lava, Sep 02 2010
EXTENSIONS
Examples replaced with a comment by R. J. Mathar, Nov 18 2010
STATUS
approved