A241947 Numbers n for which A241927(n) = 2.

1, 2, 3, 4, 5, 6, 8, 20

Offset: 1

Author

Vladimir Shevelev, May 03 2014

Keywords

• nonn
• more

Comments

If the sequence contains no perfect squares>4, then the Goldbach conjecture in Fermi-Dirac arithmetic (FDGC) is true (see comment in A241927).

Essentially, the sequence is the Fermi-Dirac analog of A100570. Since A100570 is conjecturally finite, it is natural to suppose that this sequence is also finite.

There is not another term up to 10^6. - Peter J. C. Moses, May 05 2014

Thus, if 20 is the last term of the sequence, then the FDGC is true. - Vladimir Shevelev, May 05 2014

Crossrefs

Cf. A241927, A241922, A100570.

Extensions

Name corrected by Michel Marcus, Dec 14 2018