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.

A274081 Number of unrooted labeled trees on 3n+2 nodes with node degree either one or four.

Table of values

n a(n)
0 1
1 5
2 560
3 277200
4 369969600
5 1040623584000
6 5318844410880000
7 44743448895425280000
8 577102758498249984000000
9 10821132329283106871040000000
10 283002122589833107696435200000000
11 9986037506585076241055342592000000000
12 462684151212030123561950840428953600000000

List of values

[1, 5, 560, 277200, 369969600, 1040623584000, 5318844410880000, 44743448895425280000, 577102758498249984000000, 10821132329283106871040000000, 283002122589833107696435200000000, 9986037506585076241055342592000000000, 462684151212030123561950840428953600000000]

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

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