A187845 Partial sums of A187844.

0, -1, -3, -6, -10, -15, -21, -28, -36, -45, -45, -44, -42, -39, -35, -30, -24, -17, -9, 0, 0, 2, 6, 12, 20, 30, 42, 56, 72, 90, 90, 93, 99, 108, 120, 135, 153, 174, 198, 225, 225, 229, 237, 249, 265, 285, 309, 337, 369, 405, 405, 410, 420, 435, 455, 480, 510, 545, 585, 630, 630, 636, 648, 666

Offset: 0

Author

Reinhard Zumkeller, Mar 14 2011

Keywords

• sign
• base
• look

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 0..25000

Crossrefs

Cf. A061076.

Programs

Haskell

a187845 n = a187845_list !! (n-1)
a187845_list = scanl1 (+) $ map a187844 [0..]
-- Reinhard Zumkeller, Jan 29 2014