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.

User: Alex Bellos

Alex Bellos's wiki page.

Alex Bellos has authored 3 sequences.

A185374 Number of holes in n-th lower case letter of English alphabet (in printed form using standard Times New Roman font).

Original entry on oeis.org

1, 1, 0, 1, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0
Offset: 1

Views

Author

Alex Bellos, Feb 29 2012

Keywords

Comments

The letter a has one hole, b has one hole, c has no holes, ...

Links

Crossrefs

Cf. A208568, A064530, A064692.

A208568 Number of holes in n-th lower case letter of English alphabet (in hand-written form using a cursive script).

Original entry on oeis.org

1, 1, 0, 1, 1, 2, 2, 1, 0, 1, 2, 1, 0, 0, 1, 1, 2, 0, 1, 0, 0, 0, 0, 0, 1, 1
Offset: 1

Views

Author

Alex Bellos and N. J. A. Sloane, Feb 28 2012, corrected Mar 01 2012

Keywords

Examples

			a has one hole, b has one hole, c has no holes, ... (though the sequence refers to hand-written letters, not these printed letters).

Links

Crossrefs

Cf. A185374, A064530, A064692.

A192994 Numbers above 100 in the Fundamentalis Tabula Arithmeticae.

Original entry on oeis.org

106, 117, 256, 318, 365
Offset: 1

Views

Author

Alex Bellos, Jul 14 2011

Keywords

Comments

The Fundamentalis Tabula Arithmeticae is a document from 1638 of multiplication tables up to 100, which also includes tables for the five extra numbers listed here. The document is held in the Kölnischer Stadtmuseum in Cologne, Germany.

Extensions

location added by Alex Bellos, Jul 25 2011

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

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