login
A058847
Palindromes that are the sum of consecutive initial odd primes.
3
3, 8, 5115, 6336, 81218, 3091903, 7843487, 792727297, 37706560773, 30398022089303, 263888373888362, 81120957675902118
OFFSET
1,1
COMMENTS
3 + 5 + 7 + 11 + 13 + 17 + ... + z = n. For values of z see A058846.
a(13) > 1.2*10^26, if it exists. - Giovanni Resta, Sep 01 2018
FORMULA
a(n) = A071148(A058845(n)). - R. J. Mathar, Sep 09 2015
MATHEMATICA
palQ[n_]:=Module[{idn=IntegerDigits[n]}, idn==Reverse[idn]]; Select[ Accumulate[ Prime[Range[2, 25000000]]], palQ] (* The program takes a long time to run and only generates the first 11 terms of the sequence *) (* Harvey P. Dale, Aug 24 2014 *)
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Dec 15 2000
STATUS
approved