cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A210609 Number of intersections after n-th stage in the structure mentioned in A210606 using semicircumferences and counting the superposed intersections only once.

Original entry on oeis.org

0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 8, 14, 21, 27
Offset: 1

Views

Author

Omar E. Pol, Mar 25 2012

Keywords

Comments

The structure mentioned in A210606 is a model for the visualization of Recamán's sequence A005132.
First differs from A210608 at a(24).

Links

Crossrefs

Cf. A005132, A064289, A119632, A160356, A160357, A171175, A171178, A210606, A210607, A210608, A210610-A210613.

A210611 Records in A119632.

Original entry on oeis.org

1, 3, 11, 28, 36, 52, 148, 200, 286, 736, 1050, 1442, 1624, 1666, 1854, 2422, 5256, 6374, 12028, 14702, 26290, 31892, 41578, 43626, 47948, 104540, 138640, 177862, 217282, 327804, 564396, 832032, 961848, 994408, 1192870, 1549322, 1689140
Offset: 1

Views

Author

Omar E. Pol, Mar 25 2012

Keywords

Comments

Also 1 together with the records in A210610.
Positions of the records: 1, 3, 5, 11, 27, 38, 57, 76, 93, 142, 258, 357, 361, 524, 556, 560, 777...

Links

Crossrefs

Cf. A005132, A210606-A206613.

Extensions

More terms from R. J. Mathar, Apr 01 2012
Showing 1-2 of 2 results.

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