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A050721
Primes arising in
A083571
.
3
2, 3, 11, 109, 173, 5513600773
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OFFSET
1,1
COMMENTS
Prime indices of palindromic triangular numbers.
LINKS
Table of n, a(n) for n=1..6.
P. De Geest,
Subsets of palindromic triangulars
CROSSREFS
Cf.
A008510
,
A050722
.
Sequence in context:
A300898
A079853
A358602
*
A058114
A042337
A061482
Adjacent sequences:
A050718
A050719
A050720
*
A050722
A050723
A050724
KEYWORD
nonn
,
base
,
hard
AUTHOR
Patrick De Geest
, Sep 15 1999
STATUS
approved
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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)