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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.

A256020 a(n) = Sum_{i=1..n-1} (i^4 * a(i)), a(1)=1.

Table of values

n a(n)
1 1
2 1
3 17
4 1394
5 358258
6 224269508
7 290877551876
8 698687879606152
9 2862524242746404744
10 18783884080901907930128
11 187857624693099981209210128
12 2750611340756369924865254694176
13 57039427373264843131930786593127712
14 1629160124635190449534207126672913710144

List of values

[1, 1, 17, 1394, 358258, 224269508, 290877551876, 698687879606152, 2862524242746404744, 18783884080901907930128, 187857624693099981209210128, 2750611340756369924865254694176, 57039427373264843131930786593127712, 1629160124635190449534207126672913710144]

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

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