1,1

645 is a member since 645=3*5*43, sum of digits of 645 is 6+4+5=15, sum of digits of prime factors = 3+5+4+3=15

Sequence in context: A061324 A089295 A100873 this_sequence A067845 A057942 A046020

Adjacent sequences: A063841 A063842 A063843 this_sequence A063845 A063846 A063847

base,nonn

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Aug 25 2001