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.

A354608 Number of quadruples (p_1, ..., p_4) of positive integers such that p_{i-1} <= p_i <= n^(i-1).

Table of values

n a(n)
0 0
1 1
2 44
3 541
4 3236
5 12885
6 39656
7 102249
8 231736
9 476121
10 905620
11 1618661
12 2748604
13 4471181
14 7012656
15 10658705
16 15764016
17 22762609
18 32178876
19 44639341
20 60885140
21 81785221
22 108350264
23 141747321
24 183315176
25 234580425
26 297274276
27 373350069
28 465001516
29 574681661

List of values

[0, 1, 44, 541, 3236, 12885, 39656, 102249, 231736, 476121, 905620, 1618661, 2748604, 4471181, 7012656, 10658705, 15764016, 22762609, 32178876, 44639341, 60885140, 81785221, 108350264, 141747321, 183315176, 234580425, 297274276, 373350069, 465001516, 574681661]

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

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