A065062 Numbers k such that A065608(k) = A065608(k+1).

4, 14, 117, 1334, 1634, 2685, 14282, 33998, 42818, 64665, 84134, 109214, 122073, 166934, 172286, 180213, 289454, 383594, 405441, 440013, 443402, 544334, 605985, 649154, 655005, 792855, 1642154, 2284814, 2305557, 2913105, 3571905, 3682622

Offset: 1

Author

Jason Earls, Nov 06 2001

Keywords

• nonn

Links

• Harry J. Smith, Table of n, a(n) for n = 1..80

Programs

PARI

{ n=0; x=0; for (m=1, 10^9, p=x; x=sigma(m + 1) - numdiv(m + 1); if (x == p, write("b065062.txt", n++, " ", m); if (n==100, return)) ) } \\ Harry J. Smith, Oct 05 2009

Extensions

More terms from David Wasserman, Aug 21 2002

a(31)-a(32) from Harry J. Smith, Oct 05 2009