A328367 Partial sums of A057641.

0, 0, 1, 1, 5, 5, 12, 14, 21, 26, 39, 39, 56, 65, 77, 85, 108, 113, 140, 148, 169, 189, 223, 224, 257, 282, 312, 329, 375, 382, 432, 454, 494, 531, 577, 583, 645, 688, 738, 757, 827, 846, 920, 957, 1003, 1058, 1140, 1149, 1228, 1274, 1344, 1391, 1486, 1518, 1601, 1639, 1720, 1794, 1901, 1903, 2015, 2096

Offset

1,5

Links

Table of n, a(n) for n=1..62.

Formula

a(n) = A328363(n) - A024916(n).

Prog

(Magma) f:=func<n| Floor(a+Exp(a)*Log(a))-DivisorSigma(1, n) where a is HarmonicNumber(n) >; [&+[f(k):k in [1..n]]:n in [1..62]]; // Marius A. Burtea, Nov 18 2019

Crossrefs

Cf. A000203, A001008, A002805, A024916, A057640, A057641, A328363.

Sequence in context: A061391 A168336 A123133 * A338085 A302676 A370297

Adjacent sequences: A328364 A328365 A328366 * A328368 A328369 A328370

Keyword

nonn

Author

Omar E. Pol, Oct 26 2019

Status

approved