A346782 Numbers k such that A006577(k!) sets a new record.

2, 3, 4, 5, 7, 8, 9, 11, 12, 14, 17, 21, 26, 29, 33, 34, 37, 44, 45, 47, 48, 51, 52, 55, 58, 61, 70, 78, 85, 89, 91, 92, 93, 96, 97, 98, 105, 107, 113, 114, 118, 124, 129, 135, 145, 148, 149, 150, 152, 157, 161, 173, 175, 179, 184, 192, 201, 205, 206, 209, 212, 213

Offset

1,1

Links

Table of n, a(n) for n=1..62.

Prog

(PARI) a6577(n0)={my(n=n0, k=0); while(n>1, k++; n=if(n%2, 3*n+1, n/2)); k};
a346782(limit)={my(msteps=0); for(k=0, limit, my(m=a6577(k!)); if(m>msteps, print1(k, ", "); msteps=m))};
a346782(215)

Crossrefs

The corresponding record numbers of steps are A346783.

Cf. A006577, A070974, A346592, A346593.

Sequence in context: A079734 A050730 A288221 * A229757 A319272 A366142

Adjacent sequences: A346779 A346780 A346781 * A346783 A346784 A346785

Keyword

nonn

Author

Hugo Pfoertner, Aug 04 2021

Status

approved