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a(n) = tau(n) * prime(n).
1

%I #9 Feb 19 2021 10:59:38

%S 2,6,10,21,22,52,34,76,69,116,62,222,82,172,188,265,118,366,134,426,

%T 292,316,166,712,291,404,412,642,218,904,254,786,548,556,596,1359,314,

%U 652,668,1384,358,1448,382,1158,1182,796,422,2230,681,1374,932,1434,482

%N a(n) = tau(n) * prime(n).

%H Andrew Howroyd, <a href="/A125518/b125518.txt">Table of n, a(n) for n = 1..1000</a>

%t Table[DivisorSigma[0,n]Prime[n],{n,60}] (* _Harvey P. Dale_, Feb 19 2021 *)

%o (PARI) a(n) = numdiv(n) * prime(n); \\ _Andrew Howroyd_, Aug 09 2018

%Y Row sums of A127641.

%Y Cf. A000005 (tau), A000040 (prime).

%Y Cf. A127640, A127638, A127639.

%K nonn,easy

%O 1,1

%A _Gary W. Adamson_, Jan 21 2007

%E Name changed and terms a(15) and beyond from _Andrew Howroyd_, Aug 09 2018