A133662 Lexically least increasing sequence such that the sum of any nonempty subsequence is not a square.

2, 3, 5, 10, 27, 38, 120, 258, 907, 2030, 3225, 8295, 15850, 80642, 378295, 1049868, 3031570, 12565348, 34530254, 122586800, 415026860, 1454069870, 4870827425, 18129394322, 77805478498

Offset

1,1

Comments

a(26) <= 299244596987. - Donovan Johnson, Jan 30 2011

Links

Table of n, a(n) for n=1..25.

Example

10 is here because none of 10, 10+2, 10+3, 10+5, 10+2+3, 10+2+5, 10+3+5 and 10+2+3+5 are square numbers.

Crossrefs

Cf. A064776.

Sequence in context: A011833 A007695 A296261 * A204518 A336991 A223545

Adjacent sequences: A133659 A133660 A133661 * A133663 A133664 A133665

Keyword

nonn,more

Author

Randy L. Ekl, Dec 28 2007

Extensions

Edited by Don Reble, Dec 30 2007

Definition corrected by Don Reble, Jan 01 2008

a(23)-a(25) from Donovan Johnson, Jan 30 2011

Status

approved