OFFSET
0,2
COMMENTS
After the first term, each term seems to be a multiple of 3.
LINKS
Paul D. Hanna, Table of n, a(n) for n = 0..300
FORMULA
a(n) = sqrt(A083353(n)).
EXAMPLE
PROG
(PARI) {for(i=1, 30, A=[1]; print1(1, ", "); for(i=1, 200, A0=concat(A, 0); for(n=1, 100*A[#A], A0[#A0]=n; B=Vec(Ser(A0)^2 + Ser(A0) - 1); if(issquare(B[#B]), print1(sqrtint(B[#B]), ", "); A0[#A0]=n; A=A0; break)))); C=vector(#B, n, sqrtint(B[n]))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 26 2003
EXTENSIONS
Extended by Paul D. Hanna, Nov 19 2017
STATUS
approved