|
%I #9 Dec 15 2020 09:10:11
%S 12,30,35,57,110,130,170,190,230,290,310,370,410,430,447,453,459,561,
%T 567,671,730,779,783,789,897,1010,1030,1070,1090,1113,1127,1131,1137,
%U 1139,1149,1510,1570,1630,1670,1730,1790,1810,1910,1930,1970,1990,2110
%N a(n) is the smallest composite number > a(n-1) that contains the n-th prime as a substring.
%F a(n) <= 10*n. [_Reinhard Zumkeller_, May 16 2010]
%e S = 12,30,35,57,110,130,170,190,230,290,310,370,410,430,447,...
%e p = .2.3...5..7.11..13..17..19..23..29..31..37..41..43...47...
%Y Cf. A169798.
%Y Cf. A177981, A177982. [_Reinhard Zumkeller_, May 16 2010]
%K nonn,base
%O 1,1
%A _Eric Angelini_, May 01 2010
%E Typo in example corrected by _D. S. McNeil_, May 16 2010
%E Corrected and extended by _D. S. McNeil_ and _Reinhard Zumkeller_, May 16 2010
|
