A365493 - cp's OEIS frontend

A365493 a(n) is the smallest number which can be represented as the sum of n n-almost primes in exactly n ways, or -1 if no such number exists.

n	a(n)
1	2
2	18
3	44
4	112
5	418
6	776
7	1408
8	3072
9	7040
10	14848
11	53056
12	77312
13	147456
14	315392
15	988160
16	5310464
17	3194880
18	6225920
19	12845056
20	46252032
21	76873728
22	117440512
23	258998272
24	1072824320
25	1111490560
26	3379560448
27	5192548352
28	9261023232
29	24243077120
30	41204842496
31	81067507712

[2, 18, 44, 112, 418, 776, 1408, 3072, 7040, 14848, 53056, 77312, 147456, 315392, 988160, 5310464, 3194880, 6225920, 12845056, 46252032, 76873728, 117440512, 258998272, 1072824320, 1111490560, 3379560448, 5192548352, 9261023232, 24243077120, 41204842496, 81067507712]

cp's OEIS Frontend

A365493 a(n) is the smallest number which can be represented as the sum of n n-almost primes in exactly n ways, or -1 if no such number exists.

Table of values

List of values