login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A337424 Sums s of positive exponents such that no prime of the form (3^j*5^k - 1)/2 with j + k = s exists. 3
12, 19, 20, 23, 26, 33, 34, 35, 40, 41, 48, 51, 52, 54, 63, 68, 69, 74, 75, 78, 83, 87, 93, 97, 101, 103, 105, 114, 116, 123, 132, 135, 138, 141, 142, 144, 147, 152, 154, 159, 165, 170, 172, 173, 179, 180, 186, 187, 189, 192, 194, 202, 203, 210, 215, 216, 217, 218, 221 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..59.

CROSSREFS

Positions of 0 in A337423.

Cf. A336772, A337426.

Sequence in context: A112880 A211083 A100541 * A056688 A342071 A107911

Adjacent sequences:  A337421 A337422 A337423 * A337425 A337426 A337427

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, Aug 27 2020

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 20 18:43 EDT 2021. Contains 348118 sequences. (Running on oeis4.)