A287895 Differences of A287894.

4, 13, 12, 3, 61, 42, 50, 39, 43, 80, 65, 89, 180, 110, 146, 160, 156, 187, 88, 118, 258, 243, 244, 282, 287, 189, 343, 311, 203, 410, 219, 467, 473, 274, 384, 535, 406, 484, 54, 825, 310, 558, 551, 375, 886, 659, 539, 515, 294, 914, 764, 478, 774, 757, 823

Offset

1,1

Comments

The first two negative terms are a(99) = -239 and a(999) = -5966. - Giovanni Resta, Jun 07 2017

Links

Robert Israel, Table of n, a(n) for n = 1..1000

Example

Take the differences of 1,5,18,30,... => 4,13,12,...

Maple

ds:= n -> convert(convert(n, base, 10), `+`):
f:= n -> add(ds(k^n), k=1..n):
A287894:= map(f, [$1..101]);
A287894[2..101] - A287894[1..100]; # Robert Israel, Jun 30 2017

Mathematica

s[n_] := Sum[Total@IntegerDigits[k^n], {k, n}]; Differences@ Array[s, 60] (* Giovanni Resta, Jun 07 2017 *)

Crossrefs

Cf. A287894.

Sequence in context: A175174 A369412 A136137 * A050223 A301792 A344512

Adjacent sequences: A287892 A287893 A287894 * A287896 A287897 A287898

Keyword

sign,base

Author

Marian Kraus, Jun 02 2017

Status

approved