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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.

A135976 Mersenne composites (A065341) with exactly 2 prime factors.

Table of values

n a(n)
1 2047
2 8388607
3 137438953471
4 2199023255551
5 576460752303423487
6 147573952589676412927
7 9671406556917033397649407
8 158456325028528675187087900671
9 2535301200456458802993406410751

List of values

[2047, 8388607, 137438953471, 2199023255551, 576460752303423487, 147573952589676412927, 9671406556917033397649407, 158456325028528675187087900671, 2535301200456458802993406410751]

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

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