A050450 Sum_{d|n, d=1 mod 4} d^2.

1, 1, 1, 1, 26, 1, 1, 1, 82, 26, 1, 1, 170, 1, 26, 1, 290, 82, 1, 26, 442, 1, 1, 1, 651, 170, 82, 1, 842, 26, 1, 1, 1090, 290, 26, 82, 1370, 1, 170, 26, 1682, 442, 1, 1, 2132, 1, 1, 1, 2402, 651, 290, 170, 2810, 82, 26, 1, 3250, 842, 1, 26, 3722, 1

Offset: 1

Author

N. J. A. Sloane, Dec 23 1999

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A027750, A050453.

Programs

Haskell

a050450 = sum . map (^ 2) . filter ((== 1) . (`mod` 4)) . a027750_row
-- Reinhard Zumkeller, Jun 17 2013