A346783 a(n) = A006577(A346782(n)), records in A070974.

1, 8, 10, 20, 41, 44, 86, 147, 210, 264, 426, 500, 559, 633, 795, 950, 1069, 1171, 1218, 1327, 1330, 1342, 1402, 1551, 1672, 1974, 2274, 2528, 2725, 2730, 2911, 2928, 2994, 3117, 3315, 3443, 3495, 3524, 4061, 4347, 4651, 4703, 4818, 5049, 5322, 5447, 5449, 5756

Offset: 1

Author

Hugo Pfoertner, Aug 04 2021

Keywords

• nonn

Crossrefs

Cf. A006577, A070974, A346782.

Programs

PARI

a6577(n0)={my(n=n0, k=0); while(n>1, k++; n=if(n%2, 3*n+1, n/2)); k};
a346783(limit)={my(msteps=0);for(k=0,limit,my(m=a6577(k!));if(m>msteps,print1(m,", ");msteps=m))};
a346783(150)