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.

A139096 Infraperfect numbers: a(n) = 2^(2*p - 1) - 2^p, where p is A000043(n).

Table of values

n a(n)
1 4
2 24
3 480
4 8064
5 33546240
6 8589803520
7 137438429184
8 2305843007066210304
9 2658455991569831743501771111346995200
10 191561942608236107294793377774818628309652252823388160

List of values

[4, 24, 480, 8064, 33546240, 8589803520, 137438429184, 2305843007066210304, 2658455991569831743501771111346995200, 191561942608236107294793377774818628309652252823388160]

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

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