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A031880 Lucky numbers that are both palindromic and nonprime. 1
1, 9, 33, 99, 111, 141, 171, 303, 393, 535, 717, 777, 979, 1441, 1771, 3003, 3223, 3663, 5335, 7447, 9009, 9339, 9999, 11011, 11811, 11911, 12121, 12321, 12621, 13531, 14041, 14541, 14841, 17671, 18381, 18681, 19791, 30303, 31713, 32223 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..5436 (terms below 10^9)

CROSSREFS

Intersection of A000959 and A032350.

Sequence in context: A228170 A112888 A048479 * A231765 A220165 A036543

Adjacent sequences:  A031877 A031878 A031879 * A031881 A031882 A031883

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

EXTENSIONS

Name corrected by Amiram Eldar, Nov 15 2019

STATUS

approved

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Last modified January 23 04:16 EST 2020. Contains 331168 sequences. (Running on oeis4.)