|
|
|
|
1, 1, 4, 4, 28, 24, 156, 128, 784, 1120, 5740, 2880, 33460, 37128, 150080, 147456, 1128256, 931392, 6446016, 4677120, 28514304, 44450560, 224075664, 106168320, 1265644800, 1560708240, 5970392064, 5588803584, 44560482148, 33497856000, 255263424000, 196368924672, 1210784762880
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
LINKS
|
|
|
EXAMPLE
|
|
|
MATHEMATICA
|
EulerPhi[LinearRecurrence[{2, 1}, {1, 2}, 33]] (* Amiram Eldar, Oct 21 2023 *)
|
|
PROG
|
(PARI) a000129(n) = ([2, 1; 1, 0]^n)[2, 1];
a(n) = eulerphi(a000129(n));
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|