|
Search: id:A117050
|
|
|
| A117050 |
|
Primes of the form 22*(n^2)+1 for which the sum of the digits is also of the form 22*(n^2)+1. |
|
+0
1
|
|
| 6359, 26951, 117239, 174263, 306329, 521753, 635801, 720743, 794201, 1103873, 1487201, 4655201, 5412353, 6655001, 8213063, 10053473, 10322951, 12014663, 12841313, 16120193, 23113751, 25613303, 26138201, 39503201
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
6359 is in the sequence because (1) it is a prime that can be written as 22*(17^2)+1 and (2)the sum of its digits 6+3+5+9=23 can be written as 22*(1^2)+1
|
|
MATHEMATICA
|
t=1+22Range[2000]^2; Select[t, PrimeQ[ # ] && MemberQ[t, Total[IntegerDigits[ # ]]]&] - T. D. Noe (noe(AT)sspectra.com), Nov 15 2006
|
|
CROSSREFS
|
Sequence in context: A107582 A054560 A069428 this_sequence A105009 A031668 A031578
Adjacent sequences: A117047 A117048 A117049 this_sequence A117051 A117052 A117053
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
Luc Stevens (lms022(AT)yahoo.com), Apr 15 2006
|
|
EXTENSIONS
|
Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 15 2006
|
|
|
Search completed in 0.002 seconds
|
