A065064 Numbers k such that A065608(k) = A065608(k+2).

9, 33, 54, 100, 918, 1240, 3304, 4148, 4187, 7169, 8825, 12565, 15085, 19688, 24881, 25019, 26609, 38982, 51835, 53963, 59987, 76360, 77057, 91610, 96728, 143369, 150419, 167560, 170561, 205727, 215069, 220817

Offset: 1

Author

Jason Earls, Nov 06 2001

Keywords

• nonn

Links

• Harry J. Smith, Table of n, a(n) for n = 1..200

Programs

PARI

{ n=x=y=0; for (m=1, 10^9, z=y; y=x; x=sigma(m + 2) - numdiv(m + 2); if (x == z, write("b065064.txt", n++, " ", m); if (n==200, return)) ) } \\ Harry J. Smith, Oct 05 2009