|
| |
|
|
A244363
|
|
Number of toothpicks added at n-th stage in the toothpick structure of the symmetric representation of sigma in the first quadrant (without the axis x and y).
|
|
10
|
|
|
|
2, 4, 6, 8, 8, 12, 10, 16, 16, 20, 14, 24, 16, 26, 26, 32, 20, 36, 22, 40, 36, 38, 26, 48, 34, 44, 44, 56
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
Partial sums give A244362. - Omar E. Pol, Oct 18 2014
a(n) is also the sum of semiperimeters of the parts of the symmetric representation of sigma(n). - Omar E. Pol, Dec 11 2016
|
|
|
LINKS
|
Table of n, a(n) for n=1..28.
|
|
|
FORMULA
|
a(n) = 2*A244361(n).
a(n) = A244371(n)/4. - Omar E. Pol, Oct 18 2014
a(n) = A274919(n)/2. - Omar E. Pol, Dec 11 2016
|
|
|
CROSSREFS
|
Cf. A000203, A196020, A237270, A237271, A237593, A244360, A244361, A244362, A244370, A244371, A245092, A262626, A274919.
Sequence in context: A115158 A107634 A060659 * A063199 A219028 A062355
Adjacent sequences: A244360 A244361 A244362 * A244364 A244365 A244366
|
|
|
KEYWORD
|
nonn,more
|
|
|
AUTHOR
|
Omar E. Pol, Jun 26 2014
|
|
|
EXTENSIONS
|
More terms from Omar E. Pol, Oct 18 2014
|
|
|
STATUS
|
approved
|
| |
|
|
