%I
%S 15,1001,12650,14950,387670507005
%N Binomial coefficients of the form C(n, 4) that is a concatenation of binomial coefficients of the form C(n, 4).
%H Erich Friedman, <a href="https://erichfriedman.github.io/mathmagic/1011.html">Problem of the month October 2011</a>
%e 15 = 1 & 5
%e 1001 = 1 & 0 & 0 & 1
%e 12650 = 126 & 5 & 0
%e 14950 = 1 & 495 & 0
%e 387670507005 = 3876 & 70 & 5 & 0 & 70 & 0 & 5
%K nonn,base,bref
%O 1,1
%A _Kausthub Gudipati_, Oct 04 2011
