|
|
A292379
|
|
Odd numbers k such that A292270((k-1)/2) is a square < ((k-1)/2)^2.
|
|
2
|
|
|
7, 15, 27, 31, 63, 95, 127, 255, 277, 305, 511, 519, 1023, 1921, 2047, 2349, 3575, 4095, 8191, 8743, 10525, 16383, 17955, 24661, 26585, 27305, 32767, 36611, 40677, 65535, 85173
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
PROG
|
(PARI)
A000265(n) = (n >> valuation(n, 2));
n=1; k=0; while(k < 120, m = A292270(n); if(issquare(m) && (m < n^2), k++; write("b292379.txt", k, " ", 1+(2*n))); n++);
|
|
CROSSREFS
|
Doesn't contain any terms of A001122.
Cf. A000225 (subsequence from its term a(3) = 7 onward).
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|