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 A276782 Where record values occur in A276781. 2
 2, 6, 15, 22, 36, 58, 95, 96, 147, 148, 209, 210, 305, 306, 901, 902, 903, 904, 905, 906, 1149, 1150, 1353, 1354, 1355, 1356, 1357, 1358, 1359, 1360, 5621, 5622, 8499, 8500, 9585, 9586, 15719, 15720, 15721, 15722, 15723, 15724, 15725, 15726, 19653, 19654, 19655, 19656, 19657, 19658, 19659, 19660, 31449 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Chai Wah Wu, Table of n, a(n) for n = 1..72 Christophe Soulé, Le triangle de Pascal et ses propriétés, Lecture, Soc. Math. de France, Feb 13 2008. MAPLE A276781 := proc(n)     local b, k;     for b from 0 to floor(n/2+1) do         igcd(seq(binomial(n, k), k=b..n-b)) ;         if % > 1 then             return b ;         end if;     end do: end proc: am := -1 ; for n from 2 do     an := A276781(n) ;     if an > am then         printf("%d, \n", n) ;         am := an ;     end if; end do: # R. J. Mathar, Sep 30 2016 MATHEMATICA Function[t, First@ Position[t, #] & /@ Range@ Max@ t][{0}~Join~Table[b = 1; While[GCD @@ Map[Binomial[n, #] &, Range[b, n - b]] == 1, b++]; b, {n, 2, 1500}]] // Flatten (* Michael De Vlieger, Oct 03 2016 *) CROSSREFS Cf. A276781. Sequence in context: A014847 A013636 A144653 * A227210 A177442 A090979 Adjacent sequences:  A276779 A276780 A276781 * A276783 A276784 A276785 KEYWORD nonn AUTHOR N. J. A. Sloane, Sep 29 2016 EXTENSIONS a(11)-a(30) from R. J. Mathar, Sep 30 2016 More terms from Chai Wah Wu, Oct 02 2016 STATUS approved

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Last modified May 19 22:56 EDT 2019. Contains 323411 sequences. (Running on oeis4.)