OFFSET
0,4
REFERENCES
Oscar S. Adams, Elliptic Functions Applied to Conformal World Maps, Special Publication No. 112 of the U.S. Coast and Geodetic Survey, 1925. See pp. 3-4.
EXAMPLE
1/cm(w) = 1 + (1/3)*w^3 + (1/18)*w^6 + (23/2268)*w^9 + (25/13608)*w^12 + (619/1857492)*w^15 + ...
PROG
(PARI) anum(nn) = my(A = O(x)); for(i=0, nn, A = 1 - intformal(intformal(A^2)^2)); my(v=Vec(1/A)); apply(x->numerator(x), vector(#v\3, k, v[3*k-2])); \\ Michel Marcus, Jun 10 2020
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Michel Marcus and N. J. A. Sloane, Jun 10 2020
STATUS
approved