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 A139107 Bisection of A139102. 1
 1, 9, 599, 38359, 2454999, 628479869, 643563386359, 41188056726999, 168706280353789919, 43188807770570219359, 2764083697316494039005, 2830421706052089895941623, 46373629231957440855107559295 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS MAPLE A139101 := proc(n) option remember ; local a, p; if n = 1 then RETURN(1); else a := 10*A139101(n-1) ; for p from ithprime(n-1)+1 to ithprime(n)-1 do a := 10*a+1 ; od: fi ; RETURN(a) ; end: bin2dec := proc(n) local nshft ; nshft := convert(n, base, 10) ; add(op(i, nshft)*2^(i-1), i=1..nops(nshft) ) ; end: A139102 := proc(n) bin2dec(A139101(n)) ; end: A139107 := proc(n) A139102(2*n-1) ; end: seq(A139107(n), n=1..35) ; # R. J. Mathar, Apr 25 2008 CROSSREFS Cf. A139102. Sequence in context: A238609 A015092 A332159 * A226552 A277232 A171703 Adjacent sequences:  A139104 A139105 A139106 * A139108 A139109 A139110 KEYWORD nonn AUTHOR Omar E. Pol, Apr 08 2008 EXTENSIONS More terms from R. J. Mathar, Apr 25 2008 STATUS approved

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Last modified September 26 03:19 EDT 2021. Contains 347664 sequences. (Running on oeis4.)