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Revision History for A005875 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

Showing entries 1-10 | older changes
Theta series of simple cubic lattice; also number of ways of writing a nonnegative integer n as a sum of 3 squares (zero being allowed).
(history; published version)
#192 by Hugo Pfoertner at Sat Jun 22 01:39:44 EDT 2024
STATUS

reviewed

approved

#191 by Peter Luschny at Sat Jun 22 00:27:34 EDT 2024
STATUS

proposed

reviewed

#190 by Michel Marcus at Sat Jun 22 00:04:22 EDT 2024
STATUS

editing

proposed

#189 by Michel Marcus at Sat Jun 22 00:04:11 EDT 2024
LINKS

A. Martinez Torres, L. R. Dai, C. Koren, D. Jido, and E. Oset. , <a href="http://arxiv.org/abs/1109.0396">The KD, eta D_s interaction in finite volume and the D_{s^*0}(2317) resonance</a>, arXiv:1109.0396 [hep-lat], 2011.

STATUS

proposed

editing

#188 by Chai Wah Wu at Fri Jun 21 21:53:39 EDT 2024
STATUS

editing

proposed

#187 by Chai Wah Wu at Fri Jun 21 21:53:34 EDT 2024
PROG

(Python)

# uses Python code for A004018

from math import isqrt

def A005875(n): return A004018(n)+(sum(A004018(n-k**2) for k in range(1, isqrt(n)+1))<<1) # Chai Wah Wu, Jun 21 2024

STATUS

approved

editing

#186 by Amiram Eldar at Mon Dec 18 12:07:52 EST 2023
STATUS

reviewed

approved

#185 by Stefano Spezia at Mon Dec 18 12:02:50 EST 2023
STATUS

proposed

reviewed

#184 by Stefano Spezia at Mon Dec 18 12:02:45 EST 2023
STATUS

editing

proposed

#183 by Stefano Spezia at Mon Dec 18 12:02:34 EST 2023
LINKS

S. K. K. Choi, A. V. Kumchev , and R. Osburn, <a href="https://arxiv.org/abs/math/0502007">On sums of three squares</a>, arXiv:math/0502007 [math.NT], 2005.

M. Doring, J. Haidenbauer, U.-G. Meissner , and A. Rusetsky, <a href="http://arxiv.org/abs/1108.0676">Dynamical coupled-channel approaches on a momentum lattice</a>, arXiv:1108.0676 [hep-lat], 2011.

A. Martinez Torres, L. R. Dai, C. Koren, D. Jido , and E. Oset. <a href="http://arxiv.org/abs/1109.0396">The KD, eta D_s interaction in finite volume and the D_{s^*0}(2317) resonance</a>, arXiv:1109.0396 [hep-lat], 2011.

STATUS

proposed

editing