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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.

A295109 a(n) = (1/n) times the n-th derivative of the ninth tetration of x (power tower of order 9) x^^9 at x=1.

Table of values

n a(n)
1 1
2 1
3 3
4 14
5 96
6 849
7 9362
8 123101
9 1888016
10 32703888
11 631924752
12 13408344586
13 310042428528
14 7748365327260
15 208162961545016
16 5980417481391924
17 182983003358805504
18 5940081852766157024
19 203920022890052114112
20 7381110402800795329344
21 280947854368982073172224

List of values

[1, 1, 3, 14, 96, 849, 9362, 123101, 1888016, 32703888, 631924752, 13408344586, 310042428528, 7748365327260, 208162961545016, 5980417481391924, 182983003358805504, 5940081852766157024, 203920022890052114112, 7381110402800795329344, 280947854368982073172224]

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

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