A342931 a(n) = A000217(A342930(n))/n^n.

1, 7, 13, 511, 1562, 3013, 411771, 33554431, 193710244, 159687996, 142655835305, 2545864168851, 151437553296126, 4672524492952950, 190419981278726, 36893488147419103231, 413620130943168382088, 6624115793937660813847, 989209827830156794561989, 5961027129129868073483022, 579547002657587965773234693

Offset

1,2

Links

Table of n, a(n) for n=1..21.

Prog

(PARI) a(n) = my(k=1, m=n^n); while(k*(k+1)/2%m!=0, k++); k*(k+1)/(2*m);

Crossrefs

Cf. A000217, A000312, A232101, A342930.

Sequence in context: A340473 A228030 A082706 * A348830 A201181 A130594

Adjacent sequences: A342928 A342929 A342930 * A342932 A342933 A342934

Keyword

nonn,easy

Author

Seiichi Manyama, Mar 29 2021

Extensions

More terms from David A. Corneth, Mar 29 2021

Status

approved