A225786 - cp's OEIS frontend

A225786 Numbers k such that oblong(2k) + oblong(k) is a square, where oblong(k) = A002378(k) = k(k+1).

n	a(n)
1	0
2	48
3	15552
4	5007792
5	1612493568
6	519217921200
7	167186558132928
8	53833552500881712
9	17334236718725778432
10	5581570389877199773488
11	1797248331303739601284800
12	578708381109414274413932208
13	186342301468900092621684886272

[0, 48, 15552, 5007792, 1612493568, 519217921200, 167186558132928, 53833552500881712, 17334236718725778432, 5581570389877199773488, 1797248331303739601284800, 578708381109414274413932208, 186342301468900092621684886272]

cp's OEIS Frontend

A225786 Numbers k such that oblong(2k) + oblong(k) is a square, where oblong(k) = A002378(k) = k(k+1).

Table of values

List of values

cp's OEIS Frontend

A225786 Numbers k such that oblong(2*k) + oblong(k) is a square, where oblong(k) = A002378(k) = k*(k+1).

Table of values

List of values

A225786 Numbers k such that oblong(2k) + oblong(k) is a square, where oblong(k) = A002378(k) = k(k+1).