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 A158054 a(1)=2, a(n+1) is the smallest prime > n*(sum of decimal digits of a(n)). 1
 2, 3, 7, 23, 23, 29, 67, 97, 131, 47, 113, 59, 173, 149, 197, 257, 227, 191, 199, 367, 331, 149, 311, 127, 241, 179, 443, 307, 281, 331, 211, 127, 331, 233, 277, 563, 509, 521, 307, 397, 761, 577, 809, 733, 577, 857, 929, 941, 673, 787, 1103, 257, 733, 691, 877 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(1)=2; a(2)=3 > 2 = 1*2; a(3)=7 > 6 = 2*3; a(4)=23 > 21 = 3*7; a(5)=23 > 20 = 4*(2+3); a(6)=29 > 25 = 5*(2+3); a(7)=67 > 66 = 6*(2+9); a(8)=97 > 91 = 7*(6+7); a(9)=131 > 128 = 8*(9+7); a(10)=47 > 45 = 9*(1+3+1). MAPLE A007953 := proc(n) add(d, d=convert(n, base, 10)) ; end proc: A158054 := proc() option remember; if n = 1 then 2; else (n-1)*A007953(procname(n-1)) ; nextprime(%) ; end if; end proc: seq(A158054(n), n=1..120) ; # R. J. Mathar, May 19 2010 CROSSREFS Cf. A000027, A000040, A156615. Sequence in context: A007660 A158055 A156615 * A134412 A005115 A113872 Adjacent sequences:  A158051 A158052 A158053 * A158055 A158056 A158057 KEYWORD nonn,base,easy AUTHOR Juri-Stepan Gerasimov, Mar 12 2009 EXTENSIONS Corrected (193 replaced by 199, all terms from a(32) on replaced) by R. J. Mathar, May 19 2010 Edited by Jon E. Schoenfield, Feb 17 2019 STATUS approved

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Last modified May 26 13:05 EDT 2019. Contains 323586 sequences. (Running on oeis4.)