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!)
A152483 Even numbers which are not the sum of 2 odd semiprimes. 2
2, 4, 6, 8, 10, 12, 14, 16, 20, 22, 26, 28, 32, 38, 52, 62 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

No more terms < 10^9. Conjectured to be complete.

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

62 is in this sequence because no 2 odd semiprimes sum to 62. 64 is not in this sequence because the sum of 9 (odd semiprime) and 55 (odd semiprime) is 64.

CROSSREFS

Cf. A001358, A046315, A152482, A152484.

Sequence in context: A249124 A322405 A118081 * A330688 A280743 A162764

Adjacent sequences:  A152480 A152481 A152482 * A152484 A152485 A152486

KEYWORD

fini,nonn

AUTHOR

Donovan Johnson, Dec 06 2008

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 May 11 19:29 EDT 2021. Contains 343808 sequences. (Running on oeis4.)