A377508 - cp's OEIS frontend

A377508 Expansion of e.g.f. exp(Sum_{k>=1} phi(k)^3 * x^k/k), where phi is the Euler totient function A000010.

n	a(n)
0	1
1	1
2	2
3	20
4	122
5	2122
6	15532
7	284104
8	3837500
9	52963964
10	1125315224
11	20981180464
12	500475045688
13	10373180665720
14	264908485440848
15	6624880728277088
16	185812008437953808
17	5449866267968244496
18	167510440639938875680
19	5447433174773217714496
20	177500241844579492474016

[1, 1, 2, 20, 122, 2122, 15532, 284104, 3837500, 52963964, 1125315224, 20981180464, 500475045688, 10373180665720, 264908485440848, 6624880728277088, 185812008437953808, 5449866267968244496, 167510440639938875680, 5447433174773217714496, 177500241844579492474016]

cp's OEIS Frontend

A377508 Expansion of e.g.f. exp(Sum_{k>=1} phi(k)^3 * x^k/k), where phi is the Euler totient function A000010.

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List of values