|
Search: id:A074207
|
|
|
| A074207 |
|
Numbers n such that the sum of the first n primes divides n!. |
|
+0
1
|
|
| 11, 17, 23, 37, 40, 49, 50, 52, 53, 56, 77, 79, 80, 84, 87, 88, 91, 98, 103, 111, 112, 113, 115, 119, 121, 127, 128, 131, 139, 149, 151, 153, 157, 163, 172, 173, 179, 188, 213, 217, 230, 231, 237, 240, 245, 247, 253, 269, 270, 271, 275, 283, 285, 295, 297, 299
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
11! / Sum_{i=1,...,11} Prime[i] = 249480, so 11 is a term of the sequence.
|
|
MATHEMATICA
|
s = 0; p = 1; r = {}; For[i = 1, i <= 500, i++, q = Prime[i]; s = s + q; p = p * i; If[Mod[p, s] == 0, r = Append[r, i]]]; r
|
|
CROSSREFS
|
Sequence in context: A158913 A066938 A076812 this_sequence A063638 A141250 A096454
Adjacent sequences: A074204 A074205 A074206 this_sequence A074208 A074209 A074210
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Sep 17 2002
|
|
|
Search completed in 0.002 seconds
|
