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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.

A240884 Semiprimes of the form C(n) + T(n) where C(n) and T(n) are the n-th cube and triangular numbers.

Table of values

n a(n)
1 33
2 74
3 237
4 371
5 1055
6 1397
7 10901
8 12443
9 30287
10 39899
11 55613
12 80453
13 207149
14 303041
15 360467
16 407999
17 639797
18 1230821
19 1650053
20 2056511
21 2695349
22 2873441
23 3454427
24 3956873
25 9823349
26 10384103
27 13680599
28 15844877
29 16419449
30 20608499
31 22705373
32 26508143

List of values

[33, 74, 237, 371, 1055, 1397, 10901, 12443, 30287, 39899, 55613, 80453, 207149, 303041, 360467, 407999, 639797, 1230821, 1650053, 2056511, 2695349, 2873441, 3454427, 3956873, 9823349, 10384103, 13680599, 15844877, 16419449, 20608499, 22705373, 26508143]

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

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