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 A104261 Sum of even digits (0,2,4,6,8) of n-th prime. 2
 2, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 4, 4, 4, 0, 0, 6, 6, 0, 0, 0, 8, 8, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 4, 0, 0, 6, 6, 0, 0, 8, 0, 0, 0, 0, 2, 4, 4, 4, 2, 2, 6, 2, 2, 8, 8, 2, 2, 10, 10, 2, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 6, 0, 0, 8, 8, 0, 4, 4, 4, 6, 4, 4, 4, 8, 8, 4, 10, 10, 10, 4, 12, 4, 4, 0, 0, 2, 2, 4, 4, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA A104261(n) = A007605(n) - A104260(n). MATHEMATICA sodev={}; Do[id=IntegerDigits[Prime[i]]; lid=Length[id]; sod=Sum[If[EvenQ[id[[k]]], id[[k]], 0], {k, lid}]; sodev={sodev, sod}, {i, 200}]; sodev//Flatten f[n_] := Plus @@ Select[ IntegerDigits[ Prime[n]], EvenQ[ # ] && # > 1 &]; Table[ f[n], {n, 102}] (* Robert G. Wilson v, Nov 03 2005 *) CROSSREFS Sum of odd digits (1, 3, 5, 7, 9) of n-th prime: A104260, sum of prime digits (2, 3, 5, 7) of n-th prime: A104250, sum of composite (nonprime) digits (1, 4, 6, 8, 9) of n-th prime: A104251, sum of digits of primes: A007605, primes: A000040. Sequence in context: A062103 A112314 A280799 * A028702 A083929 A182660 Adjacent sequences:  A104258 A104259 A104260 * A104262 A104263 A104264 KEYWORD nonn,base AUTHOR Zak Seidov, Feb 26 2005 STATUS approved

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Last modified April 20 22:39 EDT 2021. Contains 343140 sequences. (Running on oeis4.)