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A073923
a(1)=1, a(n) is the smallest power of 2 not included earlier such that Sum_{k=1..n} a(k) is prime.
3
1, 2, 4, 16, 8, 4096, 32, 16384, 134217728, 256, 33554432, 1073741824, 2147483648, 68719476736, 8192, 262144, 2722258935367507707706996859454145691648, 1152921504606846976, 10889035741470030830827987437816582766592
OFFSET
1,2
FORMULA
Conjecture: a(n) = A059661(n)-A059661(n-1). - R. J. Mathar, May 07 2007
CROSSREFS
Cf. A059661.
Sequence in context: A109584 A352217 A186110 * A153666 A098819 A186008
KEYWORD
nonn,changed
AUTHOR
Amarnath Murthy, Aug 19 2002
EXTENSIONS
More terms from Benoit Cloitre, Aug 27 2002
Name corrected by Sean A. Irvine, Dec 28 2024
STATUS
approved