A032642 Numbers k such that k concatenated with k+2 is a lucky number.

1, 7, 19, 25, 31, 49, 61, 65, 71, 77, 101, 103, 107, 121, 125, 133, 139, 149, 157, 169, 173, 193, 205, 221, 233, 245, 295, 349, 359, 371, 385, 391, 413, 425, 431, 445, 457, 463, 479, 481, 517, 527, 533, 553, 575, 583, 587, 593, 605, 611, 617, 637, 641, 643

Offset

1,2

Links

Table of n, a(n) for n=1..54.

Crossrefs

Cf. A000959, A032652.

Sequence in context: A176182 A292349 A065749 * A127633 A055246 A003282

Adjacent sequences: A032639 A032640 A032641 * A032643 A032644 A032645

Keyword

nonn,base

Author

Patrick De Geest, May 15 1998

Extensions

More terms from Sascha Kurz, Mar 24 2002

Status

approved