%I
%S 0,2,3,26,5,61,7,296,42,77,942,99,88,3264,1108,1098,110,13338,55,465,
%T 1342,2341,35906,132,21869,14806,2807,1375,179141,77,1332,16826,17494,
%U 45546,1619,394746,3108,376165,1443,192545,5097,53100,49989,2326191
%N a(n) = sum of numbers without digit 1 and with product of digits = nth 7smooth number.
%H Klaus Brockhaus, <a href="/A130975/b130975.txt">Table of n, a(n) for n = 1..100</a>
%e First 7smooth number is 1. Sum of numbers without digit 1 and with product of digits = 1 is 0 since there are no such numbers. Hence a(1) = 0.
%e Eighth 7smooth number is 8, numbers without digit 1 and with product of digits = 8 are 8, 24, 42, 222. These sum to 296, hence a(8) = 296.
%e Eleventh 7smooth number is 12, numbers without digit 1 and with product of digits = 12 are 26, 34, 43, 62, 223, 232, 322. These sum to 942, hence a(11) = 942.
%e Fifteenth 7smooth number is 18, numbers without digit 1 and with product of digits = 18 are 29, 36, 63, 92, 233, 323, 332. These sum to 1108, hence a(15) = 1108.
%Y Cf. A002473 (7smooth numbers), A084796 (concatenation of prime factors of n in decreasing order).
%K nonn,base
%O 1,2
%A Philippe Lallouet (philip.lallouet(AT)wanadoo.fr), Aug 23 2007
%E Edited, corrected and extended by _Klaus Brockhaus_, Aug 26 2007
