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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.

A316977 Number of series-reduced rooted trees whose leaves are {1, 1, 2, 2, 3, 3, ..., n, n}.

Table of values

n a(n)
1 1
2 12
3 575
4 66080
5 13830706
6 4566898564
7 2181901435364
8 1422774451251512
9 1213875872220833664
10 1312273759143855989808
11 1752860078230602866012288
12 2834766624822130489716563008
13 5458358420687156358967526721408
14 12339106957086349462329140342122112

List of values

[1, 12, 575, 66080, 13830706, 4566898564, 2181901435364, 1422774451251512, 1213875872220833664, 1312273759143855989808, 1752860078230602866012288, 2834766624822130489716563008, 5458358420687156358967526721408, 12339106957086349462329140342122112]

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

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