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.

A176071 Numbers of the form 2^k + k + 1 that are the product of two distinct primes.

Table of values

n a(n)
1 21
2 38
3 265
4 4109
5 65553
6 262163
7 1048597
8 67108891
9 274877906983
10 4503599627370549
11 73786976294838206531
12 75557863725914323419213
13 302231454903657293676623
14 5192296858534827628530496329220209
15 10889035741470030830827987437816582766726
16 95780971304118053647396689196894323976171195136475313

List of values

[21, 38, 265, 4109, 65553, 262163, 1048597, 67108891, 274877906983, 4503599627370549, 73786976294838206531, 75557863725914323419213, 302231454903657293676623, 5192296858534827628530496329220209, 10889035741470030830827987437816582766726, 95780971304118053647396689196894323976171195136475313]

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

Content is available under The OEIS End-User License Agreement.