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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.

A274392 A diagonal of rectangular array A274390 of coefficients in the iterations of Euler's tree function (A000169).

Table of values

n a(n)
1 1
2 4
3 63
4 2056
5 112625
6 9266706
7 1067280319
8 163802295616
9 32300931452769
10 7956776354536450
11 2394142654816299431
12 863996246301971667600
13 368314015001746325448313
14 183100281424495288847092386
15 104989565698848905178879275775
16 68778360046311927838608116567296
17 51049027217135211093037275781929857
18 42614907995326324626989103964953188610
19 39750079580111447237206552931429888023399
20 41188867531604111691413161924808444678694800
21 47163303540183246052916530453746351377795346681

List of values

[1, 4, 63, 2056, 112625, 9266706, 1067280319, 163802295616, 32300931452769, 7956776354536450, 2394142654816299431, 863996246301971667600, 368314015001746325448313, 183100281424495288847092386, 104989565698848905178879275775, 68778360046311927838608116567296, 51049027217135211093037275781929857, 42614907995326324626989103964953188610, 39750079580111447237206552931429888023399, 41188867531604111691413161924808444678694800, 47163303540183246052916530453746351377795346681]

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

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