At 01:44 PM 5/11/2004, Eugene McDonnell wrote: >The number of divisor chains having any first digit: > >k 1 2 3 4 5 6 7 8 9 10 11 12 13 >14 15 16 17 18 19 20 21 22 23 24 >a(k) 1 1 2 2 4 5 7 7 24 22 29 39 67 55 386 235 312 347 451 1319 5320 3220 >4489 20237 I could supply these up to n=35 (I would have to recalculate them, though).