A034875 Smallest integer not the sum of powers of some earlier terms.

1, 2, 6, 12, 25, 85, 194, 590, 1695, 4879, 19077, 83994, 167988, 1041780, 2448645, 9677725, 33250403, 117499773, 811972692, 1762911460

Offset

1,2

Comments

At most one power of the previous terms can be used.

Each term is at least twice the previous term. Some terms are twice the previous one.

Links

Table of n, a(n) for n=1..20.

Example

21 = 1^1+2^3+12^1, 22 = 2^2+6^1+12^1, 23=1^1+2^2+6^1+12^1, 24 = 1^1+2^4+6^1+12^0

Crossrefs

See A122863 for another version.

Cf. A122863.

Sequence in context: A232164 A214663 A151385 * A136515 A141347 A335724

Adjacent sequences: A034872 A034873 A034874 * A034876 A034877 A034878

Keyword

nonn,nice

Author

Erich Friedman

Extensions

More terms from Andrew Weimholt, Sep 11 2006 and Jud McCranie, Sep 13 2006

Edited by Jud McCranie, Sep 13 2006

a(19)-a(20) from Donovan Johnson, Aug 31 2010

Status

approved