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A094177 Sequence from an aptitude test that I cannot work out! 1
4, 3, 4, 9, 21, 51 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Is this an erroneous version of A249453? - Arkadiusz Wesolowski, Oct 29 2014

LINKS

Table of n, a(n) for n=1..6.

FORMULA

For n>0, a(n) = 2^(n+1)-A091855(n) = 3+A128543(n). - M. F. Hasler, Nov 01 2014

CROSSREFS

Sequence in context: A132984 A118701 A073254 * A249453 A244954 A060374

Adjacent sequences:  A094174 A094175 A094176 * A094178 A094179 A094180

KEYWORD

nonn,unkn,bref

AUTHOR

Dominique Butterworth (dominique_butterworth(AT)hotmail.com), May 06 2004

STATUS

approved

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Last modified May 29 18:29 EDT 2015. Contains 257946 sequences.