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.

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A101087 Indices of prime values of A077020 (also A001607).

Original entry on oeis.org

4, 6, 7, 8, 9, 10, 11, 15, 17, 19, 23, 25, 26, 29, 31, 47, 53, 65, 67, 71, 73, 113, 127, 199, 257, 349, 421, 433, 449, 691, 761, 823, 991, 1237, 1277, 1399, 1531, 1571, 3461, 3697, 4933, 6199, 7351
Offset: 1

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Author

Gerard P. Michon, Dec 01 2004

Keywords

Comments

There are only 9 composite numbers in the entire sequence, namely: 4, 6, 8, 9, 10, 15, 25, 26 and 65.
If we are prepared to accept probable primes, then the sequence continues as follows: 9551, 9719, 11681, 12037, 14629, 14951, 19079, 20327, 22549, 30517, 51511, 52813, 60923, 73943, 79687, 91249, 115321, 117017, 169493, 172411, 174413, 237053, 285631, 318751, 327433. - David Broadhurst, May 23 2007

Links

Crossrefs

Cf. A001607, A077020 (all values) and A101088 (prime values only). Similar to A001605 (Fibonacci primes), A000043 (Mersenne primes), A096650 (Pell primes), etc.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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