|
|
A127855
|
|
Quotients A120492(p)/p, where p = Prime[n].
|
|
0
|
|
|
3, 13, 3553, 4410001, 117279379988209, 2331742837337539921, 1542124619897735720591412481, 50763923011615077618322055249233, 103811229730824186819640201001214367336729
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Prime p divides A120492(p), where A120492(n) = 1 + Sum[ Prime[k]^(n-1), {k,1,n}] = {2, 6, 39, 504, 17765, 552552, 30870007, ...}.
|
|
LINKS
|
Table of n, a(n) for n=1..9.
|
|
FORMULA
|
a(n) = A120492(Prime(n))/Prime(n). a(n) = (1 + Sum[ Prime[k]^(Prime[n]-1), {k,1,Prime[n]} ])/Prime[n].
|
|
MATHEMATICA
|
Table[(1 + Sum[ Prime[k]^(Prime[n]-1), {k, 1, Prime[n]} ])/Prime[n], {n, 1, 15}]
|
|
CROSSREFS
|
Cf. A120492, A121166, A120329.
Sequence in context: A138487 A022507 A108583 * A087333 A320041 A016104
Adjacent sequences: A127852 A127853 A127854 * A127856 A127857 A127858
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Alexander Adamchuk, Feb 03 2007
|
|
STATUS
|
approved
|
|
|
|