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.

A203241 Second elementary symmetric function of the first n terms of (1,2,4,8,...).

Table of values

n a(n)
2 2
3 14
4 70
5 310
6 1302
7 5334
8 21590
9 86870
10 348502
11 1396054
12 5588310
13 22361430
14 89462102
15 357881174
16 1431590230
17 5726491990
18 22906230102
19 91625444694
20 366502827350
21 1466013406550
22 5864057820502
23 23456239670614
24 93824975459670

List of values

[2, 14, 70, 310, 1302, 5334, 21590, 86870, 348502, 1396054, 5588310, 22361430, 89462102, 357881174, 1431590230, 5726491990, 22906230102, 91625444694, 366502827350, 1466013406550, 5864057820502, 23456239670614, 93824975459670]

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

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