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

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

Offset

1,2

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

Links

Table of n, a(n) for n=1..8.

Crossrefs

Cf. A241927, A241922, A100570.

Sequence in context: A373933 A364455 A358175 * A128421 A115885 A259390

Adjacent sequences: A241944 A241945 A241946 * A241948 A241949 A241950

Keyword

nonn,more

Author

Vladimir Shevelev, May 03 2014

Extensions

Name corrected by Michel Marcus, Dec 14 2018

Status

approved