OFFSET
1,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..2000
FORMULA
a(n) = A274652(n-1) + n.
EXAMPLE
For n = 6 the sum of all elements of the 6th antidiagonal of the square array A269526 is 6 + 7 + 3 + 2 + 8 + 5 = 31, so a(6) = 31.
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Jun 29 2016
EXTENSIONS
More terms from Alois P. Heinz, Jun 29 2016
STATUS
approved