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

Author

Klaus Brockhaus, Nov 19 2001

Keywords

• base
• nonn

Crossrefs

Cf. A061359, A065691, A065776, A065777.

Extensions

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