login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A352305 a(n) is the (conjectured) largest even number that can be expressed as the sum of two distinct primes in exactly n ways. 1

%I #4 Mar 13 2022 19:15:19

%S 6,38,68,128,158,188,398,362,458,542,632,692,602,992,808,908,1112,

%T 1238,1412,1418,1718,1544,1574,1622,1682,2048,2252,2018,2672,2042,

%U 2558,2936,2504,2978,2966,3092,3218,3242,3272,3506,3632

%N a(n) is the (conjectured) largest even number that can be expressed as the sum of two distinct primes in exactly n ways.

%e a(5) = 188 because 188 = 7 + 181 = 31 + 157 = 37 + 151 = 61 + 127 = 79 + 109 and it is conjectured that 188 is the last term of A080854.

%Y Cf. A000954, A038609, A061357, A077914, A077969, A078299, A080854, A080862, A087747, A117929, A212613.

%K nonn

%O 0,1

%A _Ilya Gutkovskiy_, Mar 11 2022

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 17:10 EDT 2024. Contains 371962 sequences. (Running on oeis4.)