A173542 Palindromic Ulam numbers.

1, 2, 3, 4, 6, 8, 11, 77, 99, 131, 282, 363, 414, 434, 585, 646, 949, 2112, 2332, 2552, 2662, 5335, 5665, 8008, 8338, 8668, 10501, 13531, 13931, 15251, 16961, 17071, 18381, 18581, 18681, 22122, 22322, 23632, 23932, 25452, 26962, 28582, 28682, 30703, 30803, 32123

Offset

1,2

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Example

131 is in the sequence because it is palindromic as well as an Ulam number (A002858).

Crossrefs

Intersection of A002113 and A002858.

Sequence in context: A261082 A271487 A211397 * A323383 A329905 A085113

Adjacent sequences: A173539 A173540 A173541 * A173543 A173544 A173545

Keyword

base,nonn

Author

Shyam Sunder Gupta, Feb 20 2010

Extensions

More terms from Amiram Eldar, Aug 22 2020

Status

approved