A383677 - cp's OEIS frontend

A383677 Irregular triangle read by rows: T(n,k), 2 <= n , 3 <= k <= largest k such that A067175(k) <= n , is the smallest n-digit number m such that omega(m) = A001221(m) = k, and its largest prime factor equals the sum of its remaining prime factors. or -1 if no such number exists.

n	a(n)
2	30
3	120
4	-1
5	1080
6	3135
7	3570
8	10336
9	10695
10	10626
11	-1
12	100672
13	102695
14	103730
15	844305
16	-1
17	1003520
18	1005039
19	1003450
20	1218945
21	1231230
22	-1
23	10017286
24	10000295
25	10003390
26	10064145
27	10314150
28	-1
29	100216924
30	100019275
31	100017216
32	100367745
33	100327920
34	463798335
35	-1

[30, 120, -1, 1080, 3135, 3570, 10336, 10695, 10626, -1, 100672, 102695, 103730, 844305, -1, 1003520, 1005039, 1003450, 1218945, 1231230, -1, 10017286, 10000295, 10003390, 10064145, 10314150, -1, 100216924, 100019275, 100017216, 100367745, 100327920, 463798335, -1]

cp's OEIS Frontend

A383677 Irregular triangle read by rows: T(n,k), 2 <= n , 3 <= k <= largest k such that A067175(k) <= n , is the smallest n-digit number m such that omega(m) = A001221(m) = k, and its largest prime factor equals the sum of its remaining prime factors. or -1 if no such number exists.

Table of values

List of values