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%I #7 Aug 01 2023 23:54:19
%S 1,2,5,11,26,59,137,312,719,1651,3816,8757,20202,46440,106957,245989,
%T 566561,1303968,3002247,6910122,15909143
%N Number of integers q such that phiter(q)=n where phiter(n) = A064415(n).
%H Hartosh Singh Bal, <a href="https://arxiv.org/abs/2308.00455">Combinatorics of a Class of Completely Additive Arithmetic Functions<§a>, arXiv:2308.00455 [math.CO], 2023. See Table 12 p. 17.
%F If 2<=n<=6, a(n)=a(n-1)+3*a(n-2).
%Y Cf. A000010, A064415.
%K nonn,more
%O 0,2
%A Christian WEINSBERG (cweinsbe(AT)fr.packardbell.org), Sep 30 2001
%E a(14)-a(20) from _Sean A. Irvine_, Jul 07 2023
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