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A352690
Index of 2^n-1 in A353709.
1
0, 1, 5, 53, 76, 245, 1647, 5257, 20336, 30940, 124837, 374756, 1205149, 2643792, 7516934, 29855796, 102243621
OFFSET
0,3
COMMENTS
This sequence is strictly increasing.
EXAMPLE
A353709(1647) = 63 = 2^6 - 1, so a(6) = 1647.
PROG
(C++) See Links section.
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Rémy Sigrist, May 15 2022
STATUS
approved