A083666 Palindromes arising when building A083664.

2, 6, 33, 44, 88, 161, 171, 222, 232, 252, 272, 323, 414, 434, 464, 494, 505, 525, 555, 616, 858, 1551, 2002, 2112, 2332, 2772, 2992, 3773, 4224, 4554, 4774, 5005, 5225, 5445, 5555, 6336, 6776, 7007, 7667, 8118, 8778, 9009, 10001, 10101, 10701, 11811

Offset

1,1

Comments

a(n) = A083664(k)*A083664(k+d) for some k, d = 1 or 2.

Links

Table of n, a(n) for n=1..46.

Example

252=A002113(34), A083664(7)*A083664(7+1)=28*9=252, therefore 252
is a term, also A083664(19)*A083664(19+2)=18*14=252.

Crossrefs

Cf. A083126.

Sequence in context: A013976 A213435 A372902 * A083126 A098960 A162429

Adjacent sequences: A083663 A083664 A083665 * A083667 A083668 A083669

Keyword

nonn,base

Author

Reinhard Zumkeller, May 02 2003

Status

approved