A001922 - cp's OEIS frontend

A001922 Numbers k such that 3k^2 - 3k + 1 is both a square (A000290) and a centered hexagonal number (A003215).

n	a(n)
0	1
1	8
2	105
3	1456
4	20273
5	282360
6	3932761
7	54776288
8	762935265
9	10626317416
10	148005508553
11	2061450802320
12	28712305723921
13	399910829332568
14	5570039304932025
15	77580639439715776
16	1080558912851088833
17	15050244140475527880
18	209622859053806301481

[1, 8, 105, 1456, 20273, 282360, 3932761, 54776288, 762935265, 10626317416, 148005508553, 2061450802320, 28712305723921, 399910829332568, 5570039304932025, 77580639439715776, 1080558912851088833, 15050244140475527880, 209622859053806301481]

cp's OEIS Frontend

A001922 Numbers k such that 3k^2 - 3k + 1 is both a square (A000290) and a centered hexagonal number (A003215).

Table of values

List of values

cp's OEIS Frontend

A001922 Numbers k such that 3*k^2 - 3*k + 1 is both a square (A000290) and a centered hexagonal number (A003215).

Table of values

List of values

A001922 Numbers k such that 3k^2 - 3k + 1 is both a square (A000290) and a centered hexagonal number (A003215).