|
Search: id:A135739
|
|
|
| A135739 |
|
Numbers n such that n+reverse(n) has only odd decimal digits (n not multiple of 10). |
|
+0
1
|
|
| 12, 14, 16, 18, 21, 23, 25, 27, 32, 34, 36, 41, 43, 45, 52, 54, 61, 63, 72, 81, 209, 219, 229, 239, 249, 308, 318, 328, 338, 348, 407, 409, 417, 419, 427, 429, 437, 439, 447, 449, 506, 508, 516, 518, 526, 528, 536, 538, 546, 548, 605, 607, 609, 615, 617, 619
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Obviously n is in the sequence iff reverse(n) is in the sequence.
|
|
LINKS
|
Project Euler, Problem 145
|
|
EXAMPLE
|
409+904=1313 has only odd digits, so 409 and 904 are in the sequence.
|
|
PROGRAM
|
(PARI) reverse(n, m)=n=[n]; while(n=divrem(n[1], 10), m=10*m+n[2]); m odd=Vec("13579"); for(i=1, 999, i%10&!setminus(Set(Vec(Str(i+reverse(i)))), odd)&print1(i", "))
|
|
CROSSREFS
|
Sequence in context: A043651 A043701 A080693 this_sequence A096923 A135770 A091989
Adjacent sequences: A135736 A135737 A135738 this_sequence A135740 A135741 A135742
|
|
KEYWORD
|
base,easy,nonn
|
|
AUTHOR
|
M. F. Hasler (Maximilian.Hasler(AT)gmail.com), Dec 01 2007, Dec 05 2007
|
|
|
Search completed in 0.002 seconds
|
