The On-Line Encyclopedia of Integer Sequences (OEIS)

A066217 revision #5

A066217

Numbers not ending in 0 which are the product of two substrings of themselves. The substrings may be equal, but each must be greater than 1.

25, 36, 125, 375, 625, 3125, 5775, 5776, 15625, 27375, 51375, 59264, 116955, 137048, 141376, 228177, 230775, 237632, 365625, 387516, 390625, 495248, 658125, 1662656, 2387616, 2727375, 3515625, 3761368, 4265625, 4865625, 5559375, 6696216

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

EXAMPLE

5775 is in the list since 5775 = 77 * 75

CROSSREFS

Sequence in context: A029773 A029781 A161783 * A265211 A205644 A077437

Adjacent sequences: A066214 A066215 A066216 * A066218 A066219 A066220

KEYWORD

base,nonn

AUTHOR

Erich Friedman, Dec 17 2001

EXTENSIONS

More terms from Sean A. Irvine, May 20 2010

STATUS

approved