

A244361


Number of toothpicks added at nth stage in the toothpick structure of the symmetric representation of half sigma in the first octant (without the axis x and without the main diagonal).


7



1, 2, 3, 4, 4, 6, 5, 8, 8, 10, 7, 12, 8, 13, 13, 16, 10, 18, 11, 20, 18, 19, 13, 24, 17, 22, 22, 28
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OFFSET

1,2


COMMENTS

Partial sums give A244360.  Omar E. Pol, Oct 18 2014


LINKS

Table of n, a(n) for n=1..28.


FORMULA

a(n) = A244363(n)/2.
a(n) = A244371(n)/8.  Omar E. Pol, Oct 18 2014


CROSSREFS

Cf. A000203, A237270, A237271, A237591, A237593, A244360, A244362, A244363, A244370, A244371.
Sequence in context: A117248 A079788 A146288 * A199424 A184160 A064553
Adjacent sequences: A244358 A244359 A244360 * A244362 A244363 A244364


KEYWORD

nonn,more


AUTHOR

Omar E. Pol, Jun 26 2014


EXTENSIONS

More terms from Omar E. Pol, Oct 18 2014


STATUS

approved



