A031880 Lucky numbers that are both palindromic and nonprime.

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

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