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.

Showing 1-3 of 3 results.

A194692 Corner sequence associated with A194440 and A194441.

Original entry on oeis.org

0, 2, 4, 8, 14, 22, 30, 42, 55, 67, 77, 93, 113, 145, 165, 189, 216, 236, 246, 262, 286, 322, 363, 411, 459, 513, 547, 591, 641, 721, 769, 817, 872, 908, 918, 934, 958, 994, 1035, 1083, 1137, 1205, 1267, 1347, 1427, 1551, 1646, 1750, 1839, 1933, 1977, 2025, 2093
Offset: 0

Views

Author

Omar E. Pol, Sep 01 2011

Keywords

Comments

The sequence gives the number of toothpicks and D-toothpicks after n-th stage in the D-toothpick "corner" structure related to the D-toothpick "wide" triangle (See A194440). The first differences (A194693) give the number of toothpicks or D-toothpicks added at n-th stage.

Links

Crossrefs

Cf. A153006, A170883, A194270, A194440, A194441, A194694.

A194694 Corner sequence associated with A194442 and A194443.

Original entry on oeis.org

0, 2, 4, 8, 14, 22, 30, 41, 57, 70, 80, 92, 112, 134, 160, 184, 220, 241, 251, 263
Offset: 0

Views

Author

Omar E. Pol, Sep 01 2011

Keywords

Comments

The sequence gives the number of toothpicks and D-toothpicks after n-th stage in the D-toothpick "corner" structure related to the D-toothpick "narrow" triangle (See A194442). The first differences (A194695) give the number of toothpicks or D-toothpicks added at n-th stage.

Links

Crossrefs

Cf. A153006, A170883, A194270, A194442, A194443, A194692

A170882 First differences of "corner" sequence associated with A161644 and A161645.

Original entry on oeis.org

0, 1, 2, 4, 5, 5, 7, 11, 11, 7, 7, 13, 19, 19, 19, 25, 23, 11, 7, 13, 19, 21, 25, 37, 45, 35, 23, 31, 49, 53, 51, 59, 49, 19, 7, 13, 19, 21, 25, 37, 45, 37, 29, 41, 65, 77, 77, 89, 97, 67, 31, 31, 49, 59, 69, 97, 125, 111, 75, 79, 119, 135, 129, 135, 103, 35, 7
Offset: 0

Views

Author

David Applegate and N. J. A. Sloane, Jan 08 2010

Keywords

Links

Crossrefs

Cf. A139250, A161644, A161645, A170883.
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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