

A018232


Consider pairs (k,m) such that k^2 begins with a 1 and when the 1 is changed to a 2 we again get a square, m^2; sequence gives values of m for primitive solutions.


2



145, 4625, 17225, 454625, 14753125, 53948125, 1425503125, 47063515625, 168971890625, 150145486328125, 529265958203125, 479035044775390625, 1657888279384765625, 1528441794923095703125, 5193483785077392578125, 4877043905134674072265625
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OFFSET

1,1


COMMENTS

Primitive here means that if (k,m) is a solution, solutions like (10^t*k,10^t*m) are ignored.  Sean A. Irvine, Feb 05 2019


REFERENCES

Posting by Noam D. Elkies to netnews circa Oct 15 1992.


LINKS



CROSSREFS



KEYWORD

nonn,base


AUTHOR



EXTENSIONS

Missing terms inserted and more terms from Sean A. Irvine, Feb 05 2019


STATUS

approved



