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A038583 Palindromes that are the sum of consecutive initial primes. 3
2, 5, 77, 285080582, 352888253, 854848458, 137372273731, 2939156519392, 6833383883833386, 27155268786255172, 477749724515427947774, 625179415050514971526, 714014821826628128410417, 2719564270866680724659172 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(15) > 1.22*10^26. - Giovanni Resta, Sep 01 2018

LINKS

Table of n, a(n) for n=1..14.

C. Rivera, Source

EXAMPLE

2+3+5+7+11+13+17+19 = 77.

PROG

(PARI)

rev(n)=r=""; d=digits(n); for(i=1, #d, r=concat(Str(d[i]), r)); eval(r)

s=0; for(n=1, 10^5, s+=prime(n); if(rev(s)==s, print1(s, ", "))) \\ Derek Orr, Aug 16 2014

CROSSREFS

Cf. A007504, A038582, A038584, A058847.

Sequence in context: A254405 A216847 A102983 * A082080 A127997 A096266

Adjacent sequences:  A038580 A038581 A038582 * A038584 A038585 A038586

KEYWORD

nonn,base,more

AUTHOR

Jud McCranie

EXTENSIONS

a(11)-a(12) from Donovan Johnson, Apr 25 2010

a(13)-a(14) from Giovanni Resta, Aug 30 2018

STATUS

approved

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Last modified January 25 16:42 EST 2020. Contains 331245 sequences. (Running on oeis4.)