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.

A268147 A double binomial sum involving absolute values.

Table of values

n a(n)
0 0
1 16
2 512
3 12288
4 262144
5 5242880
6 100663296
7 1879048192
8 34359738368
9 618475290624
10 10995116277760
11 193514046488576
12 3377699720527872
13 58546795155816448
14 1008806316530991104
15 17293822569102704640
16 295147905179352825856
17 5017514388048998039552

List of values

[0, 16, 512, 12288, 262144, 5242880, 100663296, 1879048192, 34359738368, 618475290624, 10995116277760, 193514046488576, 3377699720527872, 58546795155816448, 1008806316530991104, 17293822569102704640, 295147905179352825856, 5017514388048998039552]