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A274530
Sum of the n-th antidiagonal of infinite Sudoku-type array A269526.
4
1, 5, 9, 16, 18, 31, 43, 51, 66, 77, 111, 146, 128, 177, 168, 202, 202, 266, 296, 278, 327, 388, 393, 405, 553, 497, 634, 690, 639, 736, 809, 792, 816, 816, 985, 1006, 1012, 1232, 1245, 1215, 1342, 1435, 1481, 1305, 1629, 1595, 1639, 1693, 1825, 1833, 2061, 2008, 2006, 2407, 2496, 2314, 2525, 2400, 2694, 2723
OFFSET
1,2
LINKS
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