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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.

A054215 Squares that are concatenations of two consecutive decreasing numbers.

Table of values

n a(n)
1 8281
2 82428241
3 98029801
4 538277538276
5 998002998001
6 7783702677837025
7 9998000299980001
8 79225472657922547264
9 86432513458643251344
10 92237976109223797609
11 99998000029999800001
12 106710893290106710893289

List of values

[8281, 82428241, 98029801, 538277538276, 998002998001, 7783702677837025, 9998000299980001, 79225472657922547264, 86432513458643251344, 92237976109223797609, 99998000029999800001, 106710893290106710893289]

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

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