[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A099982
Bisection of A000043.
1
2, 5, 13, 19, 61, 107, 521, 1279, 2281, 4253, 9689, 11213, 21701, 44497, 110503, 216091, 859433, 1398269, 3021377, 13466917, 24036583, 30402457, 37156667, 43112609
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..24.
FORMULA
a(n) = A000043(2*n-1). - Amiram Eldar, Oct 16 2024
MATHEMATICA
MersennePrimeExponent[Range[1, 48, 2]] (* Amiram Eldar, Oct 16 2024 *)
CROSSREFS
Cf. A000043, A099983.
Sequence in context: A068371 A327909 A072899 * A298991 A046696 A102719
Adjacent sequences: A099979 A099980 A099981 * A099983 A099984 A099985
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Nov 19 2004
EXTENSIONS
Offset corrected and a(20)-a(24) added by Amiram Eldar, Oct 16 2024
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified November 23 04:15 EST 2024. Contains 378032 sequences.
License Agreements, Terms of Use, Privacy Policy