A094505 Powers of 2 which are not the sum of divisors of any other number. Powers of 2 present in A007369.

2, 16, 64, 2048

Offset

1,1

Comments

The next term, 2^470, is too large to include.

Links

Table of n, a(n) for n=1..4.

Formula

a(n) = 2^A078426(n).

Crossrefs

Cf. A007369, A000203, A046528, A094502.

Sequence in context: A076616 A222381 A110048 * A035598 A167566 A034579

Adjacent sequences: A094502 A094503 A094504 * A094506 A094507 A094508

Keyword

nonn

Author

Labos Elemer, Jun 02 2004

Status

approved