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A364573
Starting from k=9, each subsequent term is the next larger odd k such that A005940(k) <= k and the ratio A005940(k)/k is nearer to 1.0 than for any previous k in the sequence.
3
9, 35, 267, 8353, 16475, 16543, 132175, 262563, 295175, 1115151, 2098057, 2109697, 8651313, 537938015, 1073787425
OFFSET
1,1
EXAMPLE
k A005940(k) A005940(k)/k k-A005940(k)
9 7 0.7777778 2
35 33 0.9428571 2
267 255 0.9550562 12
8353 8177 0.9789297 176
16475 16275 0.9878604 200
16543 16443 0.9939551 100
132175 131733 0.9966560 442
262563 262119 0.9983090 444
295175 294831 0.9988346 344
1115151 1114749 0.9996395 402
2098057 2097851 0.9999018 206
2109697 2109629 0.9999678 68
8651313 8651137 0.9999797 176
537938015 537931935 0.9999887 6080
1073787425 1073785843 0.9999985 1582.
PROG
(PARI) print1(9, ", "); r = A005940(9)/9; forstep(n=9, 1+(2^31), 2, t=A005940(n)/n; if(t<=1 && t > r, r=t; print1(n, ", ")))
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Antti Karttunen, Aug 06 2023
STATUS
approved