login
A221867
Let m = A153022(n); a(n) = (1 + sum_{i=1..m} prime(i)^2)/(1+m).
0
54, 218, 222054, 669806, 155593313228, 31860927184920, 37843679840313254, 5349233671440437948, 65075392901385088766, 102744428793110424984, 251471854505406311064463, 1074272348712875302655077, 1114427338015137279788981
OFFSET
1,1
EXAMPLE
For n=2, m=10, a(2) = 2398/11=218.
KEYWORD
nonn
AUTHOR
Robert Price, Apr 10 2013
EXTENSIONS
Definition corrected by N. J. A. Sloane, Apr 20 2013
STATUS
approved