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 A249596 Analog of A097717 in base 2. 6
 1, 2, 9, 4, 35, 558, 2205, 8, 135, 137970, 33, 1068, 545259, 135926, 138845925, 16, 527, 2106, 35288379945, 2100, 537075, 8382, 2093, 4283544, 1069975, 130, 2294286602622705, 533820, 133371, 146557818382226310, 585910928570692725, 32, 2079 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Conjecture: a(n) = n*A165781(n). - R. J. Mathar, Nov 11 2014 LINKS Lars Blomberg, Table of n, a(n) for n = 1..1661 MAPLE A249596 := proc(n)     local m, b, mbas, msf ;     b := 2;     for m from 1 to 1999999 do         mbas := convert(m, base, b) ;         msf := [op(-1, mbas), op(1..nops(mbas)-1, mbas)] ;         msf := add(op(i, msf)*b^(i-1), i=1..nops(msf)) ;         if m/n = msf then             return m;         end if;     end do:     -1 ; end proc: for n from 1 do     print(n, A249596(n)) ; end do: # R. J. Mathar, Nov 11 2014 CROSSREFS Cf. A094676, A249597, A249598, A249599. Sequence in context: A220416 A054789 A002508 * A038215 A264110 A119019 Adjacent sequences:  A249593 A249594 A249595 * A249597 A249598 A249599 KEYWORD nonn,base AUTHOR R. J. Mathar, Mar 30 2009 EXTENSIONS a(15)-a(33) from Lars Blomberg, Feb 05 2015 STATUS approved

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Last modified December 12 22:06 EST 2019. Contains 329963 sequences. (Running on oeis4.)