| #### D.5.2.37 tdCf Procedure from library `chern.lib` (see chern_lib). Usage: tdCf(n); n integer Return: list of rational numbers Purpose: computes up to degree n the coefficients of the Todd class of a line bundle Note: Example:
    LIB "chern.lib";
    // first 5 coefficients
    ring r=0,(t), dp;
    print( tdCf(4) );
    ==> [1]:
    ==> 1
    ==> [2]:
    ==> 1/2
    ==> [3]:
    ==> 1/12
    ==> [4]:
    ==> 0
    ==> [5]:
    ==> -1/720

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