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%I #21 Nov 12 2022 05:28:08
%S 8,10,13,17,23,26,28,29,31,39,42,53,55,56,73,83,94,98,101,113,114,115,
%T 121,167,217,255,266,326,327,333,367,389,397,404,409,423,425,467,497,
%U 570,631,639,749,761
%N Iccanobif semiprime indices: Indices of semiprime numbers in A014258.
%C This sequence also includes 815, 862, 943, 1013, 1106, 1204, 1319, 1398, 1419, 1554, 1669, 1729, 1762, 1801, 1847, 1874, 1930, 1977, and 2123. It might or might not include 791, 927, 1022, 1027, 1110, 1129, 1307, 1558, 1662, 1694, 1723, 1747, 1850, 1934, 1954, 1978, 2014, 2069, and 2077, but the required factoring proved rather difficult. There are no further terms below 2123. - _Lucas A. Brown_, Nov 12 2022
%H Lucas A. Brown, <a href="https://github.com/lucasaugustus/oeis/blob/main/A101764.py">A101764.py</a>.
%t nxt[{a_,b_}]:={b,IntegerReverse[a+b]}; Flatten[Position[NestList[nxt,{0,1},500][[All,1]],_?(PrimeOmega[#]==2&)]]-1 (* _Harvey P. Dale_, Jun 05 2022 *)
%Y Cf. A001358, A001129, A014258, A014259, A014260, A101763, A101765, A101766.
%K nonn,base,hard,more
%O 1,1
%A _Jonathan Vos Post_ and _Ray Chandler_, Dec 15 2004
%E Missing 367 inserted and new terms 570-761 added by _Lucas A. Brown_, Nov 12 2022
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