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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.

A048533 a(n) is the smallest value of m such that A002378(m), the m-th oblong number, contains exactly n 2's.

Table of values

n a(n)
1 1
2 16
3 141
4 458
5 1458
6 10593
7 36458
8 471933
9 471404
10 3496458
11 14930593
12 149072541
13 471446966
14 149071198
15 14907133333
16 114989226548
17 471404524016
18 1510636363333
19 14360440530228
20 47140441472504
21 149071332733333
22 1490343155861166
23 4712983368549333
24 24955404665166666
25 149070527690846966

List of values

[1, 16, 141, 458, 1458, 10593, 36458, 471933, 471404, 3496458, 14930593, 149072541, 471446966, 149071198, 14907133333, 114989226548, 471404524016, 1510636363333, 14360440530228, 47140441472504, 149071332733333, 1490343155861166, 4712983368549333, 24955404665166666, 149070527690846966]

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

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