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).

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, 16, 30, 17, 32

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..32.

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, A279228.

Sequence in context: A343292 A079788 A146288 * A199424 A350634 A184160

Adjacent sequences: A244358 A244359 A244360 * A244362 A244363 A244364

Keyword

nonn,more

Author

Omar E. Pol, Jun 26 2014

Extensions

a(13)-a(28) from Omar E. Pol, Oct 18 2014

a(29)-a(32) from Omar E. Pol, May 04 2023

Status

approved