A065844 - cp's OEIS frontend

A065844 Let u be any string of n digits from {0,1,2}; let f(u) = number of distinct primes, not beginning with 0, formed by permuting the digits of u to a base-3 number; then a(n) = max_u f(u).

n	a(n)
1	1
2	2
3	2
4	4
5	7
6	19
7	42
8	102
9	252
10	532
11	1226
12	3681
13	9100
14	24858
15	61943
16	161857
17	392935
18	1167208
19	3125539
20	8879693
21	23143081
22	63028550
23	161146767
24	480399716
25	1325189141
26	3815350317
27	10255072974

[1, 2, 2, 4, 7, 19, 42, 102, 252, 532, 1226, 3681, 9100, 24858, 61943, 161857, 392935, 1167208, 3125539, 8879693, 23143081, 63028550, 161146767, 480399716, 1325189141, 3815350317, 10255072974]

cp's OEIS Frontend

A065844 Let u be any string of n digits from {0,1,2}; let f(u) = number of distinct primes, not beginning with 0, formed by permuting the digits of u to a base-3 number; then a(n) = max_u f(u).

Table of values

List of values