A321362 - cp's OEIS frontend

A321362 a(n) is the least k such that in the prime power factorization of k! the exponents of primes p_1, ..., p_n are odd, while the exponent of p_(n+1) is even.

n	a(n)
1	2
2	3
3	5
4	119
5	57
6	220
7	1131
8	2986
9	1505
10	3211
11	21300
12	26795
13	11820
14	14575
15	67385
16	221051
17	33782
18	132512
19	819236
20	1478432
21	1630903
22	26736550
23	1095752
24	41815849
25	24813938
26	31982450
27	142574286
28	860986855
29	602660826
30	2638930495
31	2664421881
32	1309662955
33	33767540563

[2, 3, 5, 119, 57, 220, 1131, 2986, 1505, 3211, 21300, 26795, 11820, 14575, 67385, 221051, 33782, 132512, 819236, 1478432, 1630903, 26736550, 1095752, 41815849, 24813938, 31982450, 142574286, 860986855, 602660826, 2638930495, 2664421881, 1309662955, 33767540563]

cp's OEIS Frontend

A321362 a(n) is the least k such that in the prime power factorization of k! the exponents of primes p_1, ..., p_n are odd, while the exponent of p_(n+1) is even.

Table of values

List of values