|
| |
|
|
A088057
|
|
a(1)= 7, a(n) = least prime obtained by prefixing the digits of a multiple of n to a(n-1).
|
|
1
| |
|
|
7, 47, 347, 12347, 5012347, 425012347, 7425012347, 1447425012347, 1891447425012347, 201891447425012347, 330201891447425012347, 36330201891447425012347, 24736330201891447425012347
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Digits of a(n) can be partitioned from (least siginifacnt one) right to left into multiples of 1 to n. a(5) = 5012347 ===> 50, 12, 3, 4, 7.
|
|
|
EXAMPLE
| a(3) = 347 and a(4) = 12347 is obtained by prefixing 12 to 347.
|
|
|
CROSSREFS
| Cf. A088056.
Sequence in context: A104092 A024187 A001711 * A108434 A093173 A173772
Adjacent sequences: A088054 A088055 A088056 * A088058 A088059 A088060
|
|
|
KEYWORD
| base,nonn
|
|
|
AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 21 2003
|
|
|
EXTENSIONS
| More terms from Sam Alexander (amnalexander(AT)yahoo.com), Feb 27 2004
|
| |
|
|
