A291803 Partial sums of A230625.

1, 3, 6, 16, 21, 32, 39, 50, 64, 85, 96, 139, 152, 175, 204, 224, 241, 287, 306, 391, 422, 465, 488, 535, 557, 602, 617, 704, 733, 826, 857, 878, 937, 1018, 1065, 1239, 1276, 1359, 1420, 1513, 1554, 1649, 1692, 1863, 1980, 2067, 2114, 2197, 2227, 2313, 2426

Offset

1,2

Comments

Although A230625 is a very irregular function, here the graph is much smoother, and it appears that a(n) approx= 1.2*n^2. It would be nice to have a more precise estimate.

Links

N. J. A. Sloane, Table of n, a(n) for n = 1..10000

Mathematica

A230625 = Cases[Import["https://oeis.org/A230625/b230625.txt", "Table"], {_, _}][[All, 2]];
Accumulate[A230625] (* Robert Price, Mar 16 2020 *)

Crossrefs

Cf. A080670, A287881, A287882, A287874, A230625.

Sequence in context: A009196 A329124 A116613 * A330017 A212977 A127935

Adjacent sequences: A291800 A291801 A291802 * A291804 A291805 A291806

Keyword

nonn

Author

N. J. A. Sloane, Sep 06 2017

Status

approved