A071173 Nonprimes which terminate in their sum of prime factors.

1, 4, 18, 220, 230, 246, 366, 444, 624, 1166, 1323, 1462, 1530, 1992, 2230, 2406, 2625, 2730, 3024, 3125, 3182, 3286, 3484, 3606, 3760, 4220, 5733, 6372, 6435, 7592, 8658, 8856, 9585, 9747, 10143, 10850, 11232, 11655, 13176, 13230, 13275, 13760

Offset

1,2

Links

Table of n, a(n) for n=1..42.

Example

9747 is here since sopfr(9747)= 3+3+3+19+19 = 47 and 97{47}.

Crossrefs

Cf. A001414, A143993.

Sequence in context: A327335 A275965 A363313 * A143993 A145660 A246531

Adjacent sequences: A071170 A071171 A071172 * A071174 A071175 A071176

Keyword

nonn,base

Author

Jason Earls, Jun 10 2002

Status

approved