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.

A047681 a(n) = 3^(2*n)*(3^(2*n)-1)*Bernoulli(2*n)/(2*n).

Table of values

n a(n)
1 6
2 -54
3 2106
4 -179334
5 26414586
6 -5957217414
7 1906398972666
8 -821369346492294
9 458382160232420346
10 -321645776191296739974
11 277173760840187306341626
12 -287758284647458145849816454
13 354245505704926834826124160506
14 -510230879113388713374134585497734

List of values

[6, -54, 2106, -179334, 26414586, -5957217414, 1906398972666, -821369346492294, 458382160232420346, -321645776191296739974, 277173760840187306341626, -287758284647458145849816454, 354245505704926834826124160506, -510230879113388713374134585497734]