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.

A173217 G.f.: A(x) = Sum_{n>=0} (1 + x)^(n^2) / 2^(n+1).

Table of values

n a(n)
0 1
1 3
2 36
3 744
4 21606
5 807912
6 36948912
7 1997801520
8 124666314300
9 8817945612300
10 697162848757056
11 60925366551278592
12 5831682410241684192
13 606763511537812563648
14 68184018356901256320192
15 8229830886505821175612416
16 1061871008421711265790015880
17 145851902823090076435152800208
18 21247730059665104564252809209792

List of values

[1, 3, 36, 744, 21606, 807912, 36948912, 1997801520, 124666314300, 8817945612300, 697162848757056, 60925366551278592, 5831682410241684192, 606763511537812563648, 68184018356901256320192, 8229830886505821175612416, 1061871008421711265790015880, 145851902823090076435152800208, 21247730059665104564252809209792]

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

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