A306569 - cp's OEIS frontend

A306569 a(n) is the largest value obtained by iterating x -> noz(x * n) starting from 1 (where noz(k) = A004719(k) omits the zeros from k) if any, otherwise a(n) = -1.

n	a(n)
1	1
2	765257552
3	4858337151
4	62987487698944
5	14281197489647865625
6	16756687971893376
7	956884714362661
8	292452281337511936
9	11897243269649199
10	1
11	824281567746336491
12	13552472793415699584
13	841944776182612378933
14	9434962871842528764976

[1, 765257552, 4858337151, 62987487698944, 14281197489647865625, 16756687971893376, 956884714362661, 292452281337511936, 11897243269649199, 1, 824281567746336491, 13552472793415699584, 841944776182612378933, 9434962871842528764976]

cp's OEIS Frontend

A306569 a(n) is the largest value obtained by iterating x -> noz(x * n) starting from 1 (where noz(k) = A004719(k) omits the zeros from k) if any, otherwise a(n) = -1.

Table of values

List of values