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A172386
The prime which gives n primes as quickly as possible by concatenation of numbers incremented in sequence.
0
2, 983, 1327373, 12695039657
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OFFSET
1,1
COMMENTS
This is analogous to
A172257
, with increments in place of decrements.
LINKS
Table of n, a(n) for n=1..4.
EXAMPLE
23 comes from 2, explaining the first term. Until 983, no prime gives primes with concatenation of 5 and 7 numbers.
CROSSREFS
A172257
Sequence in context:
A258586
A176940
A337309
*
A079233
A194191
A190579
Adjacent sequences:
A172383
A172384
A172385
*
A172387
A172388
A172389
KEYWORD
base
,
nonn
AUTHOR
James G. Merickel
, Feb 01 2010
STATUS
approved
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Last modified May 31 23:52 EDT 2024. Contains 373008 sequences. (Running on oeis4.)