%I #8 Jan 19 2023 11:09:26
%S 3,5,6,7,10,11,17,30,20,22,82,60,37,100,236,157,156,242,240
%N a(n) is the index of the smallest tetranacci number (A000078) with exactly n prime factors (counted with multiplicity).
%C a(19) > 400. - _Daniel Suteu_, Jan 18 2023
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PrimeFactor.html">Prime Factor</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TetranacciNumber.html">Tetranacci Number</a>
%Y Cf. A000078, A001222, A072396, A359851, A359877, A359878.
%K nonn,more
%O 0,1
%A _Ilya Gutkovskiy_, Jan 16 2023
%E a(18) from _Daniel Suteu_, Jan 18 2023