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A052009 Sum of 'n with digits sorted ascending' and 'n with digits sorted descending' is prime. 1
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 (list; graph; refs; listen; history; text; internal format)
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 * A248040 A034088 A169664

Adjacent sequences:  A052006 A052007 A052008 * A052010 A052011 A052012

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Nov 15 1999

STATUS

approved

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Last modified June 24 18:46 EDT 2021. Contains 345419 sequences. (Running on oeis4.)