A077521 a(1) = 1, a(n) = smallest squarefree number which begins with n and is a multiple of the previous term.

1, 2, 30, 4110, 53430, 6037590, 718473210, 802534575570, 901246328365110, 1001284670813637210, 1104416991907441842630, 120381452117911160846670, 130132349739461964875250270, 141453864166795155819397043490

Offset

1,2

Links

Table of n, a(n) for n=1..14.

Crossrefs

Sequence in context: A000187 A053851 A369681 * A272445 A203309 A371205

Adjacent sequences: A077518 A077519 A077520 * A077522 A077523 A077524

Keyword

base,nonn

Author

Amarnath Murthy, Nov 08 2002

Extensions

Corrected and extended by Sascha Kurz, Jan 30 2003

Status

approved