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A130817
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a(n) is the total sum of the digits of n-digit primes.
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11
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17, 197, 2041, 19879, 195226, 1920513, 18980518, 188098738, 1867197599, 18562452601, 184727304713
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| Table[Plus @@ Flatten[IntegerDigits[Select[Range[10^(n - 1), 10^n], PrimeQ[ # ] &]]], {n, 7}]
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PROG
| (PARI) A007953(n)={ local(a=0, shft=n) ; while(shft!=0, a += shft %10 ; shft \= 10 ; ) ; return(a) ; } A130817(n)={ local(a=0) ; forprime(p=10^(n-1), 10^n, a += A007953(p) ; ) ; return(a) ; } { for(n=1, 30, print(A130817(n)" ") ; ) ; } - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 16 2008
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CROSSREFS
| Sequence in context: A021184 A069361 A177135 * A055432 A154276 A021379
Adjacent sequences: A130814 A130815 A130816 * A130818 A130819 A130820
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KEYWORD
| base,more,nonn
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AUTHOR
| Tanya Khovanova (tanyakh(AT)yahoo.com), Jul 16 2007
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EXTENSIONS
| One more term from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 16 2008
a(9) - a(11) from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Dec 01 2008
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