A277804 - cp's OEIS frontend

A277804 Numbers n such that first digit of n divides n, last digit of n divides n, number of divisors of n divides n and phi(n) divides n, where phi(n) is the Euler totient function.

n	a(n)
1	1
2	2
3	8
4	12
5	24
6	36
7	128
8	288
9	384
10	864
11	972
12	1152
13	1944
14	3456
15	6144
16	6912
17	13122
18	18432
19	26244
20	31104
21	62208
22	69984
23	209952
24	279936
25	294912
26	497664
27	839808
28	884736
29	1679616
30	3538944
31	4478976
32	13436928
33	22674816
34	25165824
35	31850496
36	45349632

[1, 2, 8, 12, 24, 36, 128, 288, 384, 864, 972, 1152, 1944, 3456, 6144, 6912, 13122, 18432, 26244, 31104, 62208, 69984, 209952, 279936, 294912, 497664, 839808, 884736, 1679616, 3538944, 4478976, 13436928, 22674816, 25165824, 31850496, 45349632]

cp's OEIS Frontend

A277804 Numbers n such that first digit of n divides n, last digit of n divides n, number of divisors of n divides n and phi(n) divides n, where phi(n) is the Euler totient function.

Table of values

List of values