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A094177
Sequence from an aptitude test that I cannot work out!
1
4, 3, 4, 9, 21, 51
OFFSET
1,1
COMMENTS
Is this an erroneous version of A249453? - Arkadiusz Wesolowski, Oct 29 2014
FORMULA
For n>0, a(n) = 2^(n+1)-A091855(n) = 3+A128543(n). - M. F. Hasler, Nov 01 2014
CROSSREFS
Sequence in context: A340768 A118701 A073254 * A249453 A244954 A353830
KEYWORD
nonn,unkn,bref
AUTHOR
Dominique Butterworth (dominique_butterworth(AT)hotmail.com), May 06 2004
STATUS
approved