OFFSET
1,1
FORMULA
a(n) = Max_{k: k in A191292, A000005(k)=2n, A070939(k-1)=A070939(k+1)=4*n}. - R. J. Mathar, Jun 24 2011
EXAMPLE
a(2) = 203 as 203 has 4 = 2*2 divisors and 202 and 204 are both balanced. - David A. Corneth, Apr 26 2022
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Juri-Stepan Gerasimov, Jun 05 2011
EXTENSIONS
a(4)-a(6) from R. J. Mathar, Jun 24 2011
a(7)-a(10) from David A. Corneth, Apr 26 2022
STATUS
approved