OFFSET
1,2
FORMULA
a(3n) = 0.
EXAMPLE
a(7) = 313, 313 is the 7th prime with digit sum 7. The smaller six primes are 7, 43, 61, 151, 223, and 241.
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Amarnath Murthy, Sep 19 2002
EXTENSIONS
More terms from David Wasserman, Jan 16 2005
a(7) corrected by Sean A. Irvine, Feb 16 2025
STATUS
approved