A058845 Numbers n such that the sum of the first n odd primes is palindromic.

1, 2, 49, 54, 172, 921, 1421, 12485, 78653, 1969457, 5606014, 90638394

Offset

1,2

Comments

a(13) > 2.8*10^12, if it exists. - Giovanni Resta, Sep 01 2018

Links

Table of n, a(n) for n=1..12.

P. De Geest, Palindromic Sums

Example

Palindromes are 3 + 5 + 7 + 11 + 13 + 17 + ... + z. For values of z see A058846.

Mathematica

Position[Accumulate[Prime[Range[2, 91*10^6]]], _?PalindromeQ]//Flatten (* Harvey P. Dale, Sep 12 2023 *)

Crossrefs

Cf. A058846, A058847, A038582, A071148.

Sequence in context: A364890 A280189 A280188 * A041287 A057563 A297819

Adjacent sequences: A058842 A058843 A058844 * A058846 A058847 A058848

Keyword

nonn,base,more

Author

Patrick De Geest, Dec 15 2000

Status

approved