OFFSET
1,5
COMMENTS
Number of alkyl-n-cycloalkanes with n carbon atoms (the pure n-cycloalkanes aren't counted here).
Stereoisomerism is not taken into account. Some of the drawn structures may or may not exist due to their strained geometries.
FORMULA
EXAMPLE
a(5) = 7 because there are 7 structures with 5 carbons following the rule above: 1,1-dimethylcyclopropane, 1,2-dimethylcyclopropane, ethylcyclopropane, methylcyclobutane, 1-methylbicyclobutane, 2-methylbicyclobutane, methyltetrahedrane.
CROSSREFS
KEYWORD
nonn
AUTHOR
Natan Arie Consigli, Aug 03 2017
EXTENSIONS
a(0) removed and a(15)-a(24) from Andrew Howroyd, Mar 20 2020
STATUS
approved