%I
%S 1,1,1,1,9,10,1,10,19,10,1,405,2735,4825,2500,1,406,3140,7560,7325,
%T 2500,1,3953,54077,213505,360580,277200,80000
%N Triangle read by rows: coefficients in Bell's formula for number of ways of making change with a certain set of coins.
%H G. Blom and C.E. Froeberg, <a href="/A002575/a002575.pdf">Om myntvaexling (On moneychanging) [Swedish]</a>, Nordisk Matematisk Tidskrift, 10 (1962), 5569, 103. [Annotated scanned copy]
%e Triangle begins:
%e 1,
%e 1,1,
%e 1,9,10,
%e 1,10,19,10,
%e 1,405,2735,4825,2500,
%e 1,406,3140,7560,7325,2500,
%e 1,3953,54077,213505,360580,277200,80000,
%e ...
%K nonn,tabl,more
%O 1,5
%A _N. J. A. Sloane_, Oct 09 2015
