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A174514 Partial sums of A048995. 3

%I #6 Mar 30 2012 18:40:51

%S 1,5,56,143,238,357,480,625,786,973,1178,1387,1602,1839,2084,2331,

%T 2592,2859,3134,3421,3710,4001,4304,4609,4930,5253,5578,5913,6254,

%U 6625,7030,7437,7862,8291,8738,9209,9682,10179,10694,11211,11730,12259,12798,13349,13904,14465,15040,15623,16234,16857,17482,18109,18766

%N Partial sums of A048995.

%C The subsequence of values which are themselves in A048995 begins: 1, 625. The subsequence of primes begins 5, 4001, 8291, 9209.

%F a(n) = SUM[i=1..n] A048995(i) = SUM[i=1..n] (numbers that are not the sum of the nontrivial factors, excluding 1 and i, of some natural number).

%e a(8) = 1 + 4 + 51 + 87 + 95 + 119 + 123 + 145 = 625 = 5^4.

%Y Cf. A048050, A048995.

%K nonn

%O 1,2

%A _Jonathan Vos Post_, Nov 28 2010

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