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A244361 Number of toothpicks added at n-th 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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 29 09:40 EDT 2020. Contains 337428 sequences. (Running on oeis4.)