%I #11 Jun 24 2024 10:51:04

%S 2,3,4,7,5,8,9,6,9,10,11,15,7,10,11,12,16,13,17,18,8,11,12,13,17,14,

%T 18,19,15,19,20,21,26,9,12,13,14,18,15,19,20,16,20,21,22,27,17,21,22,

%U 23,28,24,29,30,10,13,14,15,19,16,20,21,17,21,22,23,28,18,22

%N Row sums of A373557.

%H Paolo Xausa, <a href="/A373853/b373853.txt">Table of n, a(n) for n = 1..10000</a>

%F Conjecture: a(n) = A373346(n) + A007895(n).

%t Join[{2}, Map[Total[PositionIndex[Reverse[IntegerDigits[#, 2]]][1]] &, Select[Range[4, 1000, 4], DigitCount[#, 2, 1] < IntegerExponent[#, 2] + 1 &]]]

%Y Cf. A007895, A373346, A373557, A373854.

%K nonn,easy,base

%O 1,1

%A _Paolo Xausa_, Jun 19 2024