OFFSET
1,2
COMMENTS
Somu and Tran (2024) proved that a(n) > 0 for sufficiently large n.
Conjecture (checked up to 10^8): a(n) = 0 if and only if n = 11.
LINKS
Duc Van Khanh Tran, Table of n, a(n) for n = 1..10000
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
AUTHOR
Duc Van Khanh Tran, Aug 19 2024
STATUS
approved