OFFSET
1,1
COMMENTS
Somu and Tran (2024) conjectured that there are finitely many such integers. It was also conjectured that 4005819 is the largest such integer. This conjecture was checked up to 10^8.
LINKS
Duc Van Khanh Tran, Table of n, a(n) for n = 1..414
Sai Teja Somu and Duc Van Khanh Tran, On sums of practical numbers and polygonal numbers, Journal of Integer Sequences, 27(5), 2024.
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Duc Van Khanh Tran, Jun 10 2024
STATUS
approved