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%I #5 Dec 11 2022 12:01:29
%S 1,1,1,2,3,4,5,6,7,9,10,12,13,15,16,18,19,21,22,24,26,28,29,31,33,35,
%T 36,38,40,42,44,46,48,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,
%U 82,84,86,88,90,92,94,96,99,101,103,105,107,109,112,114,116
%N a(n) is the number of digits in the product of the first n odd numbers not divisible by 5.
%F a(n) = A055642(A358990(n)).
%t Table[Length[IntegerDigits[Product[2i+2Floor[(i-3)/4]+1, {i, n}]]], {n, 0, 65}]
%Y Cf. A045572, A055642, A356860, A358990.
%Y Cf. A358991 (number of zero digits), A358993 (number of nonzero digits).
%K nonn,base
%O 0,4
%A _Stefano Spezia_, Dec 09 2022