A027724 Numbers k such that k^2+k+8 is a palindrome.

0, 29, 202, 285, 2925, 2935, 20377, 29570, 297119, 2834699, 2837875, 2990390, 2997334, 287010920, 2926428849, 202542945597, 295431039629, 21495814697072, 21614586653852

Offset

1,2

Links

Table of n, a(n) for n=1..19.

P. De Geest, Palindromic Quasi_Over_Squares of the form n^2+(n+X)

Mathematica

palQ[n_] := Block[{d = IntegerDigits[n]}, d == Reverse[d]]; f[n_] := n^2 + n + 8; Select[Range[0, 3*10^5], palQ@ f@ # &] (* Giovanni Resta, Aug 29 2018 *)

Crossrefs

Cf. A027725, A027693, A027722, A027726.

Sequence in context: A237446 A144731 A200471 * A042638 A213066 A324624

Adjacent sequences: A027721 A027722 A027723 * A027725 A027726 A027727

Keyword

nonn,base,more

Author

Patrick De Geest

Extensions

a(14)-a(19) from Giovanni Resta, Aug 29 2018

Status

approved