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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.

A190376 a(n) = sum (in ordinary arithmetic) of A067399(k), for k from 2^n to 2^(n+1)-1.

Table of values

n a(n)
0 1
1 4
2 12
3 31
4 75
5 175
6 393
7 864
8 1868
9 3978
10 8394

List of values

[1, 4, 12, 31, 75, 175, 393, 864, 1868, 3978, 8394]

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

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