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!)
A337861 Numbers that can be written as the sum of two Moran numbers (see A001101). 1
36, 39, 42, 45, 48, 54, 60, 63, 66, 69, 72, 81, 84, 87, 90, 102, 105, 108, 111, 126, 129, 132, 135, 138, 141, 144, 147, 151, 153, 154, 156, 159, 160, 162, 168, 170, 171, 173, 174, 175, 177, 178, 179, 180, 183, 189, 192, 194, 195, 196, 197, 198, 201, 208, 211 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
36 = 18 + 18 = A001101(1) + A001101(1), so 36 is a term.
39 = 18 + 21 = A001101(1) + A001101(2), so 39 is a term.
87 = 42 + 45 = A001101(4) + A001101(5), so 87 is a term.
MATHEMATICA
m = 211; morans = Select[Range[m], PrimeQ[#/Plus @@ IntegerDigits[#]] &]; Select[Range[m], Length[IntegerPartitions[#, {2}, morans]] > 0 &] (* Amiram Eldar, Oct 21 2020 *)
PROG
(Magma) moran:=func<n|n mod &+Intseq(n) eq 0 and IsPrime( n div &+Intseq(n))>; [n:n in [1..220] | #RestrictedPartitions(n, 2, {k:k in [1..n-1] | moran(k)}) ne 0];
CROSSREFS
Sequence in context: A257441 A181457 A261380 * A261373 A248372 A349705
KEYWORD
nonn,base
AUTHOR
Marius A. Burtea, Oct 21 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 13 15:08 EDT 2024. Contains 374284 sequences. (Running on oeis4.)