OFFSET
3,1
COMMENTS
The corresponding n-gonal numbers are in A368075.
LINKS
Eric Weisstein's World of Mathematics, Polygonal Number
EXAMPLE
a(3) = 5: T(5) = T(6) - T(3) = T(8) - T(6) = T(15) - T(14), where T(k) is the k-th triangular number.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Ilya Gutkovskiy, Dec 10 2023
STATUS
approved