Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 4500 articles have referenced us, often saying "we would not have discovered this result without the OEIS".
Table of n, a(n) for n=0..15.
a(n)=sum(C(k)*10^k, k=0..n), n>=0, with C(n):=A000108(n).
G.f.: c(10*x)/(1-x), where c(x):=(1-sqrt(1-4*x))/(2*x) is the o.g.f. of Catalan numbers A000108.
Eleventh column (m=10) of triangle A112705.
Sequence in context: A077714 A089567 A110747 * A243674 A114758 A088061
Adjacent sequences: A112701 A112702 A112703 * A112705 A112706 A112707
Wolfdieter Lang, Oct 31 2005