The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A039596 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A039596

Numbers that are simultaneously triangular and square pyramidal.
(history; published version)

#39 by Alois P. Heinz at Thu Oct 17 12:51:08 EDT 2024

STATUS

editing

approved

#38 by Alois P. Heinz at Thu Oct 17 12:51:03 EDT 2024

MAPLE

q:= n-> issqr(8*n+1):

select(q, [sum(j^2, j=1..n)$n=0..100])[]; # Alois P. Heinz, Oct 17 2024

STATUS

approved

editing

#37 by Michael De Vlieger at Thu Sep 07 12:47:33 EDT 2023

STATUS

reviewed

approved

#36 by Stefano Spezia at Thu Sep 07 12:43:59 EDT 2023

STATUS

proposed

reviewed

#35 by Michel Marcus at Thu Sep 07 12:25:31 EDT 2023

STATUS

editing

proposed

#34 by Michel Marcus at Thu Sep 07 12:25:25 EDT 2023

CROSSREFS

Intersection of A000217 and A000330.

Cf. A000217, A000330, A053611, A053612.

STATUS

proposed

editing

#33 by Michel Marcus at Thu Sep 07 12:24:13 EDT 2023

STATUS

editing

proposed

#32 by Michel Marcus at Thu Sep 07 12:24:10 EDT 2023

LINKS

R. Finkelstein, and H. London, <a href="http://dx.doi.org/10.1016/0022-314X(72)90036-4">On triangular numbers which are sums of consecutive squares</a>, J. Number Theory 4 (1972), 455-462.

EXTENSIONS

Added zero. _Zero inserted by _Daniel Mondot_, Sep 07 2023

STATUS

proposed

editing

#31 by Robert Israel at Thu Sep 07 12:21:23 EDT 2023

STATUS

editing

proposed

Discussion

Thu Sep 07

12:21

Robert Israel: I mean "Offset should still be 1 because this is a list."

#30 by Robert Israel at Thu Sep 07 12:20:43 EDT 2023

OFFSET

0,1,3

STATUS

proposed

editing