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A014819 a(n) = Sum_{k=1..n} floor(k^4/n). 2
1, 8, 32, 88, 195, 377, 666, 1096, 1701, 2530, 3630, 5056, 6863, 9115, 11884, 15240, 19249, 24012, 29606, 36126, 43665, 52327, 62220, 73452, 86137, 100398, 116364, 134158, 153915, 175789, 199908, 226432, 255501, 287288, 321958, 359672, 400599, 444927, 492842 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

M. Eichler and D. Zagier, The Theory of Jacobi Forms, Birkhauser, 1985, p. 103.

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..1000

MAPLE

f := m-> add( floor((nu)^4/m), nu=0..m): seq(f(n), n=1..40);

MATHEMATICA

Table[Sum[Floor[k^4/n], {k, 1, n}], {n, 1, 40}] (* G. C. Greubel, Nov 21 2018 *)

PROG

(PARI) vector(40, n, sum(k=1, n, floor(k^4/n))) \\ G. C. Greubel, Nov 21 2018

(MAGMA) [(&+[Floor(k^4/n): k in [1..n]]): n in [1..40]]; // G. C. Greubel, Nov 21 2018

(Sage) [sum(floor(k^4/n) for k in (1..n)) for n in (1..40)] # G. C. Greubel, Nov 21 2018

CROSSREFS

Cf. A014817, A014818.

Sequence in context: A130809 A018839 A008412 * A033155 A132117 A159941

Adjacent sequences:  A014816 A014817 A014818 * A014820 A014821 A014822

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

Title improved by Sean A. Irvine, Nov 21 2018

STATUS

approved

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Last modified May 19 13:27 EDT 2019. Contains 323393 sequences. (Running on oeis4.)