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.

A172495 a(n) = numerator of fraction whose decimal representation is (n).(1)(2)(3)...(n-1)(n).

Table of values

n a(n)
1 11
2 53
3 3123
4 20617
5 102469
6 95679
7 71234567
8 406172839
9 9123456789
10 101234567891
11 111234567891011
12 1515432098637639
13 1312345678910111213
14 70617283945505560657
15 3024691357820222426283
16 403086419727527803285379
17 171234567891011121314151617

List of values

[11, 53, 3123, 20617, 102469, 95679, 71234567, 406172839, 9123456789, 101234567891, 111234567891011, 1515432098637639, 1312345678910111213, 70617283945505560657, 3024691357820222426283, 403086419727527803285379, 171234567891011121314151617]

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

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