A052009 Sum of 'n with digits sorted ascending' and 'n with digits sorted descending' is prime.

1, 10, 100, 107, 109, 116, 118, 146, 158, 161, 164, 166, 170, 178, 181, 185, 187, 188, 190, 229, 239, 245, 254, 257, 269, 275, 277, 292, 293, 296, 299, 329, 338, 344, 356, 365, 368, 383, 386, 392, 407, 416, 425, 434, 443, 452, 455, 461, 467, 469, 470, 476

Offset

0,2

Links

Table of n, a(n) for n=0..51.

Example

107 is a term because 017 + 710 = 727 is prime.

Crossrefs

Cf. A052008.

Sequence in context: A169665 A257795 A257950 * A355592 A357300 A248040

Adjacent sequences: A052006 A052007 A052008 * A052010 A052011 A052012

Keyword

nonn,base

Author

Patrick De Geest, Nov 15 1999

Status

approved