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.

A350306 a(n) is the constant term in the expansion of Product_{k=1..n} (x^k + 1 + 1/x^k)^k.

Table of values

n a(n)
0 1
1 1
2 3
3 57
4 2855
5 459597
6 240485241
7 395649695145
8 2023017357650345
9 31899582278283495743
10 1542718311570632349138107
11 227912729019868361872929934159
12 102547791095886594007005283976727239
13 140202209701199998336689204011032887220183

List of values

[1, 1, 3, 57, 2855, 459597, 240485241, 395649695145, 2023017357650345, 31899582278283495743, 1542718311570632349138107, 227912729019868361872929934159, 102547791095886594007005283976727239, 140202209701199998336689204011032887220183]