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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.

A283801 Concatenation of the first n odd composite numbers (A071904).

Table of values

n a(n)
1 9
2 915
3 91521
4 9152125
5 915212527
6 91521252733
7 9152125273335
8 915212527333539
9 91521252733353945
10 9152125273335394549
11 915212527333539454951
12 91521252733353945495155
13 9152125273335394549515557
14 915212527333539454951555763
15 91521252733353945495155576365

List of values

[9, 915, 91521, 9152125, 915212527, 91521252733, 9152125273335, 915212527333539, 91521252733353945, 9152125273335394549, 915212527333539454951, 91521252733353945495155, 9152125273335394549515557, 915212527333539454951555763, 91521252733353945495155576365]

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

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