A334197 - OEIS

A334197

Positions of records in A334090; After 1, positions of record jumps upward in A064097.

1, 2, 33, 129, 1081, 2049, 9233, 33793, 458753, 2015233, 3932161, 33554945, 188743681

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Terms a(3) .. a(11) are squarefree semiprimes, but 33554945 = 5 * 47 * 142787.

Records themselves are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13.

LINKS

PROG

(PARI)

A064097(n) = if(1==n, 0, 1+A064097(n-(n/vecmin(factor(n)[, 1]))));

m=0; prev=-1; for(n=1, 2^26, t=A064097(n); if((t-prev)>m, m=t-prev; print1(n, ", ")); prev=t);

CROSSREFS

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(13) from Jinyuan Wang, May 01 2020

STATUS

approved