A065778 a(1) = 16; for n > 1, a(n) is the smallest integer > 0 such that the concatenation a(n)a(n-1)...a(2)a(1) is a square.

16, 21, 602, 9919, 201825782, 786148373230451374, 222497947677972243238266280556039145, 689281060145549220555862860288211510118547777224654163905516661857896088

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Crossrefs

Cf. A061359, A065691, A065776, A065777.

Sequence in context: A302880 A303528 A123662 * A305944 A243972 A091118

Adjacent sequences: A065775 A065776 A065777 * A065779 A065780 A065781

Keyword

base,nonn

Author

Klaus Brockhaus, Nov 19 2001

Extensions

More terms from Ulrich Schimke (ulrschimke(AT)aol.com), Dec 18 2001

Status

approved