%I A002670 M2033 N0805
%S A002670 1,2,12,72,240,2400,907200,4233600,25401600,1371686400
%N A002670 Denominator of constant term in polynomial arising from numerical integration 
               formula.
%D A002670 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A002670 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002670 H. E. Salzer, Equally-weighted quadrature formulas for inversion integrals, 
               Math. Comp., 11 (1957), 197-200.
%Y A002670 Cf. A002669.
%Y A002670 Sequence in context: A012376 A002630 A009552 this_sequence A119921 A167747 
               A018931
%Y A002670 Adjacent sequences: A002667 A002668 A002669 this_sequence A002671 A002672 
               A002673
%K A002670 nonn
%O A002670 1,2
%A A002670 N. J. A. Sloane (njas(AT)research.att.com).