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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.

A075742 Fibonacci numbers for which both the value and index are the product of an odd number of distinct primes; that is, numbers Fibonacci(k) for which mu(k) = mu(Fibonacci(k)) = -1.

Table of values

n a(n)
1 2
2 5
3 13
4 89
5 233
6 1597
7 28657
8 514229
9 24157817
10 433494437
11 2971215073
12 44945570212853
13 190392490709135
14 99194853094755497
15 1500520536206896083277
16 3928413764606871165730
17 1066340417491710595814572169
18 19134702400093278081449423917

List of values

[2, 5, 13, 89, 233, 1597, 28657, 514229, 24157817, 433494437, 2971215073, 44945570212853, 190392490709135, 99194853094755497, 1500520536206896083277, 3928413764606871165730, 1066340417491710595814572169, 19134702400093278081449423917]

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

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