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%I #10 Apr 21 2017 20:38:09
%S 1,1,3,0,5,2,19,0,0,37,10,19,21,0,0,0,89,143,84,97,26,0,127,283
%N Number of harmonic seed numbers (A035527) whose largest prime factor is the n-th odd prime (A065091).
%H Yusuke Chishiki, Takeshi Goto, and Yasuo Ohno, <a href="https://doi.org/10.1090/S0025-5718-07-01933-3">On the largest prime divisor of an odd harmonic number</a>, Mathematics of Computation, Vol. 76, No. 259 (2007), pp. 1577-1587.
%e There are 3 harmonic seed numbers whose largest prime factor is A065091(3) = 7 (28, 672 and 30240), thus a(3) = 3.
%Y Cf. A035527.
%K nonn,more
%O 1,3
%A _Amiram Eldar_, Mar 31 2017
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