1,1

Cf. A106807 Primes with digit sum = 67.

a(n) = pi(A106807(n))

a(1) = 3556550 because prime(3556550) = 59899999 is the first prime with digit sum = 67.

Cf. A106807.

Sequence in context: A106812 A106811 A083624 this_sequence A053078 A116221 A118813

Adjacent sequences: A107346 A107347 A107348 this_sequence A107350 A107351 A107352

nonn,base

Zak Seidov (zakseidov(AT)yahoo.com), May 19 2005