login
A175440
Terms in A177950 that are not in A002778.
1
9, 33, 48, 66, 87, 99, 117, 216, 273, 288, 297, 333, 484, 513, 528, 666, 783, 819, 999, 1323, 1331, 1452, 1474, 1602, 2178, 2622, 3333, 4884, 4961, 6666, 7161, 7575, 9999, 10989, 11979, 12969, 14652, 14733, 15972, 20402, 21021, 21534, 21648, 23331
OFFSET
1,1
COMMENTS
Terms n in A177950 such that n^2 is palindrome are also in A002778.
This sequence consists of numbers (more interesting?) that are in A177950 but not in A002778.
Notice that most terms are multiples of 3, while some are not: 484, 1331, 1474, 4961, 20402, 48884, 122221, 188887, 217822, 467126, 477773, 484484, 506506, 525503, 718189, 808808, 1461262, 1729408, 2004002, 2317315, 2920819, 4840484.
CROSSREFS
Cf. A002778 Numbers whose square is a palindrome, A177950 Numbers n dividing n^2 with digits reversed.
Sequence in context: A145849 A111045 A020226 * A280405 A111351 A065064
KEYWORD
base,nonn
AUTHOR
Zak Seidov, May 16 2010
STATUS
approved