A139022 a(n) = sum{k=0 to n} A139021(k).

2, 5, 16, 29, 256, 563, 1024, 1487, 4096, 6779, 65536, 124367, 262144, 400151, 17179869184, 34359339617, 274877906944, 515396474423, 19807040628566084398385987584, 39614081257132168281375501017, 324518553658426726783156020576256, 648997493235596321398030665669353

Offset

0,1

Comments

By definition, every term is a power of a prime.

For all n >= 0, a(2n) = 2^m, m >= 1.

Links

Table of n, a(n) for n=0..21.

Crossrefs

Cf. A139020, A139021.

Sequence in context: A328000 A323006 A361257 * A196025 A174988 A364706

Adjacent sequences: A139019 A139020 A139021 * A139023 A139024 A139025

Keyword

nonn

Author

Leroy Quet, Apr 06 2008

Extensions

a(5)-a(19) from Donovan Johnson, Nov 26 2008

a(20)-a(21) from Max Alekseyev, Oct 14 2012

Status

approved