Unnamed

// based on Dimport java.lang.Math;public final class partialsums{ public static void main(String[] args){    double n = Integer.parseInt(args[0]) + 1, alt = 1;    double sum0=0, sum1=0, sum2=0, sum3=0, sum4=0, sum5=0, sum6=0, sum7=0, sum8=0;    for(double d = 1; d < n; d++, alt = -alt)    {        double d2 = d * d, d3 = d2 * d;        double ds = Math.sin(d), dc = Math.cos(d);        sum0 += Math.pow(2 / 3d,d - 1);        sum1 += 1 / Math.sqrt(d);        sum2 += 1 / (d * (d + 1));        //  Flint Hills        sum3 += 1 / (d3 * ds * ds);        //  Cookson Hills        sum4 += 1 / (d3 * dc * dc);        //  Harmonic        sum5 += 1 / d;        //  Riemann Zeta        sum6 += 1 / (d2);        //  Alternating Harmonic        sum7 += alt / d;        //  Gregory        sum8 += alt / (2 * d - 1);    }      System.out.printf("%.9f\t(2/3)^k\n", sum0);      System.out.printf("%.9f\tk^-0.5\n", sum1);      System.out.printf("%.9f\t1/k(k+1)\n", sum2);      System.out.printf("%.9f\tFlint Hills\n", sum3);      System.out.printf("%.9f\tCookson Hills\n", sum4);      System.out.printf("%.9f\tHarmonic\n", sum5);      System.out.printf("%.9f\tRiemann Zeta\n", sum6);      System.out.printf("%.9f\tAlternating Harmonic\n", sum7);      System.out.printf("%.9f\tGregory\n", sum8);}}