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A032654
Lucky numbers that are concatenations of n with n + 4.
1
15, 37, 1519, 1923, 2125, 3943, 5559, 6367, 7377, 8589, 99103, 111115, 117121, 135139, 159163, 165169, 201205, 219223, 261265, 267271, 273277, 327331, 333337, 345349, 357361, 369373, 381385, 399403, 423427, 471475, 483487, 495499, 513517
OFFSET
1,1
CROSSREFS
Sequence in context: A051461 A321383 A039605 * A320721 A086096 A272189
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, May 15 1998
EXTENSIONS
More terms from Sascha Kurz, Mar 24 2002
STATUS
approved