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.

A317351 G.f. satisfies: A(x) = Sum_{n>=0} ( (1+x)^(n+1) - A(x) )^n / (2 - (1+x)^n*A(x))^(n+1).

Table of values

n a(n)
0 1
1 2
2 6
3 16
4 154
5 4584
6 130464
7 3816304
8 123180090
9 4422532004
10 175136909492
11 7585703878304
12 356923128965592
13 18139717839708536
14 990827454743868120
15 57910782633622271952
16 3607453763547725076028
17 238660376246383050751764
18 16714929289459273370819900
19 1235688614706272361317140840
20 96170725583233854961162923028

List of values

[1, 2, 6, 16, 154, 4584, 130464, 3816304, 123180090, 4422532004, 175136909492, 7585703878304, 356923128965592, 18139717839708536, 990827454743868120, 57910782633622271952, 3607453763547725076028, 238660376246383050751764, 16714929289459273370819900, 1235688614706272361317140840, 96170725583233854961162923028]