|
|
A166700
|
|
Totally multiplicative sequence with a(p) = a(p-1) + 3 for prime p.
|
|
1
|
|
|
1, 4, 7, 16, 19, 28, 31, 64, 49, 76, 79, 112, 115, 124, 133, 256, 259, 196, 199, 304, 217, 316, 319, 448, 361, 460, 343, 496, 499, 532, 535, 1024, 553, 1036, 589, 784, 787, 796, 805, 1216, 1219, 868, 871, 1264, 931, 1276, 1279, 1792, 961, 1444
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
FORMULA
|
Multiplicative with a(p^e) = (a(p-1)+3)^e. If n = Product p(k)^e(k) then a(n) = Product (a(p(k)-1)+3)^e(k).
|
|
MAPLE
|
f:= proc(n) option remember; local F, t;
F:= ifactors(n)[2];
mul((procname(t[1]-1)+3)^t[2], t = F)
end proc:
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|