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A166448 Sum of first n primes minus next prime. 3
-1, 0, 3, 6, 15, 24, 39, 54, 71, 98, 123, 156, 195, 234, 275, 322, 379, 434, 497, 566, 633, 708, 785, 866, 959, 1058, 1157, 1262, 1367, 1466, 1589, 1714, 1849, 1978, 2125, 2270, 2421, 2580, 2741, 2908, 3085, 3256, 3445, 3634, 3829, 4016, 4215, 4434, 4659, 4884 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Bill McEachen, Table of n, a(n) for n = 1..20000

EXAMPLE

2-3=-1, 2+3-5=0, 2+3+5-7=3,..

MATHEMATICA

Clear[lst, n, a, b]; a=0; lst={}; Do[a+=Prime[n]; b=a-Prime[n+1]; AppendTo[lst, b], {n, 5!}]; lst

Module[{nn=60, prs}, prs=Prime[Range[nn]]; Accumulate[Take[prs, nn-1]]- Take[ prs, {2, nn}]] (* Harvey P. Dale, Oct 12 2015 *)

PROG

(PARI) A166448()={ summ=0; for (n=1, 500, p=prime(n); summ+=p;

write("b166448.txt", n, " ", (summ-prime(n+1)) ));  \\end FOR }

CROSSREFS

Cf. A007504

Sequence in context: A179805 A006639 A242757 * A192171 A281758 A280465

Adjacent sequences:  A166445 A166446 A166447 * A166449 A166450 A166451

KEYWORD

sign

AUTHOR

Vladimir Joseph Stephan Orlovsky, Oct 13 2009

STATUS

approved

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Last modified April 25 00:32 EDT 2017. Contains 285346 sequences.