login
A171421
Euler totient function of the n-th single or isolated number.
1
1, 2, 2, 4, 6, 22, 8, 36, 12, 46, 52, 16, 66, 24, 78, 82, 88, 96, 32, 36, 112, 126, 130, 44, 40, 156, 162, 166, 172, 48, 64, 60, 210, 222, 72, 232, 64, 250, 256, 262, 72, 276, 92, 292, 306, 96, 316, 330, 336, 112, 352, 358, 366, 372, 378, 382, 388, 396, 400, 408
OFFSET
1,2
LINKS
FORMULA
a(n) = A000010(A167706(n)).
CROSSREFS
KEYWORD
nonn,less
AUTHOR
EXTENSIONS
More terms from Amiram Eldar, Feb 29 2020
STATUS
approved