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.

A379614 a(n) = Sum_{k=0..n} 2^((n + k - 1)*(n - k)/2) * n! / (n - k)!. Row sums of A365638.

Table of values

n a(n)
0 1
1 2
2 8
3 62
4 920
5 26104
6 1420496
7 148881328
8 30184791424
9 11884978702720
10 9119462417850112
11 13676896785924429056
12 40193177909606893812736
13 231954028321633491248270336
14 2633539132301114752459257620480
15 58919202504421532088999537276311552
16 2601059501207939343360641860628003520512

List of values

[1, 2, 8, 62, 920, 26104, 1420496, 148881328, 30184791424, 11884978702720, 9119462417850112, 13676896785924429056, 40193177909606893812736, 231954028321633491248270336, 2633539132301114752459257620480, 58919202504421532088999537276311552, 2601059501207939343360641860628003520512]