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A078915
Primes in A071827.
0
71, 131071, 19131071, 2319131071, 443231282319131071
OFFSET
1,1
REFERENCES
Shyam Sunder Gupta, Smarandache Sequence of Happy Numbers, Smarandache Notions Journal, Vol. 13, 2002).
EXAMPLE
a(1)=71 because in A071827 71 is the first prime.
CROSSREFS
Cf. A071827.
Sequence in context: A243686 A131454 A099684 * A144242 A144360 A350005
KEYWORD
nonn
AUTHOR
Shyam Sunder Gupta, Jan 11 2003
EXTENSIONS
Next three terms in the sequence have 72, 857 and 1309 digits respectively.
STATUS
approved