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A244360 Total number of toothpicks after 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). 8
1, 3, 6, 10, 14, 20, 25, 33, 41, 51, 58, 70, 78, 91, 104, 120, 130, 148, 159, 179, 197, 216, 229, 253, 270, 292, 314, 342 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Partial sums of A244361.

LINKS

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

FORMULA

a(n) = A244362(n)/2 = A244370(n)/8. - Omar E. Pol, Oct 18 2014

CROSSREFS

Cf.  A000203, A237270, A237271, A237593, A244361, A244362, A244363, A244370, A244371.

Sequence in context: A334454 A236758 A272058 * A183863 A140949 A025206

Adjacent sequences:  A244357 A244358 A244359 * A244361 A244362 A244363

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 December 5 23:38 EST 2021. Contains 349558 sequences. (Running on oeis4.)