%I A002456 M5216 N2270
%S A002456 1,30,1260,75600,6237000,681080400,95351256000,16672848192000,
%T A002456 3563821301040000,914714133933600000,277707211062240960000
%N A002456 Central differences of 0.
%D A002456 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A002456 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002456 S. A. Joffe, Quart. J. Pure Appl. Math. 47 (1914), 103-126.
%D A002456 A. Fletcher, J. C. P. Miller, L. Rosenhead and L. J. Comrie, An Index 
               of Mathematical Tables. Vols. 1 and 2, 2nd ed., Blackwell, Oxford 
               and Addison-Wesley, Reading, MA, 1962, Vol. 1, p. 112.
%D A002456 H. T. Davis, Tables of the Mathematical Functions. Vols. 1 and 2, 2nd 
               ed., 1963, Vol. 3 (with V. J. Fisher), 1962; Principia Press of Trinity 
               Univ., San Antonio, TX, Vol. 2, p. 283.
%Y A002456 Sequence in context: A075187 A060076 A163521 this_sequence A107768 A048536 
               A000173
%Y A002456 Adjacent sequences: A002453 A002454 A002455 this_sequence A002457 A002458 
               A002459
%K A002456 nonn
%O A002456 1,2
%A A002456 N. J. A. Sloane (njas(AT)research.att.com).