A067112 Let N = 2357111317192329313741434753..., the concatenation of the primes; a(n) = sum of first n digits of N.

0, 2, 5, 10, 17, 18, 19, 20, 23, 24, 31, 32, 41, 43, 46, 48, 57, 60, 61, 64, 71, 75, 76, 80, 83, 87, 94, 99, 102, 107, 116, 122, 123, 129, 136, 143, 144, 151, 154, 161, 170, 178, 181, 189, 198, 207, 214, 215, 215, 216, 217, 217, 220, 221, 221, 228, 229, 229, 238, 239

Offset: 0

Author

Amarnath Murthy, Jan 08 2002

Keywords

• easy
• nonn
• base

Examples

			a(5) = 2+3+5+7+1 = 18.
		

Links

• Zak Seidov, Table of n, a(n) for n = 0..1000

Programs

Mathematica

s=0;ss={0};Do[id=IntegerDigits[Prime[k]];Do[AppendTo[ss,s=s+id[[i]]],{i,Length[id]}],{k,100}];ss (* Zak Seidov, Jan 23 2015 *)

PARI

{s=0;print1(0", ");for(k=1,100,id=digits(prime(k));for(i=1,# id,print1(s=s+id[i]", ")))} \\ Zak Seidov, Jan 24 2015

Extensions

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 01 2003