A049015 Numbers k such that the sum of the first k Mersenne prime exponents is prime.

1, 2, 4, 6, 8, 14, 18, 46, 48

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Crossrefs

Cf. A000043.

Sequence in context: A162762 A156097 A288793 * A039597 A317979 A359090

Adjacent sequences: A049012 A049013 A049014 * A049016 A049017 A049018

Keyword

nonn,less,more

Author

G. L. Honaker, Jr.

Extensions

a(8)-a(9) from Max Alekseyev, Feb 23 2024

Status

approved