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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.

A219615 a(n) = Sum_{k=0..12} binomial(n,k).

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 16
5 32
6 64
7 128
8 256
9 512
10 1024
11 2048
12 4096
13 8191
14 16369
15 32647
16 64839
17 127858
18 249528
19 480492
20 910596
21 1695222
22 3096514
23 5546382
24 9740686
25 16777216
26 28354132
27 47050564
28 76717268
29 123012781
30 194129627
31 301766029
32 462411533
33 699030226
34 1043243132

List of values

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8191, 16369, 32647, 64839, 127858, 249528, 480492, 910596, 1695222, 3096514, 5546382, 9740686, 16777216, 28354132, 47050564, 76717268, 123012781, 194129627, 301766029, 462411533, 699030226, 1043243132]

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

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