OFFSET
1,1
COMMENTS
No new term less than 2000000. This sequence is included in A274994 because it can be shown that Sum_{k=1..(p-1)/2} (k^(p-2))*(k^(p-1)-1) == p*((2^(p-1)-1)/p)*(2*((p-1)!+1)/p +(2^(p-1)-1)/p) (mod p^2).
CROSSREFS
KEYWORD
nonn,bref,more
AUTHOR
René Gy, Dec 31 2016
STATUS
approved