A001844 - cp's OEIS frontend

A001844 Centered square numbers: a(n) = 2n(n+1)+1. Sums of two consecutive squares. Also, consider all Pythagorean triples (X, Y, Z=Y+1) ordered by increasing Z; then sequence gives Z values.

n	a(n)
0	1
1	5
2	13
3	25
4	41
5	61
6	85
7	113
8	145
9	181
10	221
11	265
12	313
13	365
14	421
15	481
16	545
17	613
18	685
19	761
20	841
21	925
22	1013
23	1105
24	1201
25	1301
26	1405
27	1513
28	1625
29	1741
30	1861
31	1985
32	2113
33	2245
34	2381
35	2521
36	2665
37	2813
38	2965
39	3121
40	3281
41	3445
42	3613
43	3785
44	3961
45	4141
46	4325
47	4513

[1, 5, 13, 25, 41, 61, 85, 113, 145, 181, 221, 265, 313, 365, 421, 481, 545, 613, 685, 761, 841, 925, 1013, 1105, 1201, 1301, 1405, 1513, 1625, 1741, 1861, 1985, 2113, 2245, 2381, 2521, 2665, 2813, 2965, 3121, 3281, 3445, 3613, 3785, 3961, 4141, 4325, 4513]

cp's OEIS Frontend

A001844 Centered square numbers: a(n) = 2n(n+1)+1. Sums of two consecutive squares. Also, consider all Pythagorean triples (X, Y, Z=Y+1) ordered by increasing Z; then sequence gives Z values.

Table of values

List of values

cp's OEIS Frontend

A001844 Centered square numbers: a(n) = 2*n*(n+1)+1. Sums of two consecutive squares. Also, consider all Pythagorean triples (X, Y, Z=Y+1) ordered by increasing Z; then sequence gives Z values.

Table of values

List of values

A001844 Centered square numbers: a(n) = 2n(n+1)+1. Sums of two consecutive squares. Also, consider all Pythagorean triples (X, Y, Z=Y+1) ordered by increasing Z; then sequence gives Z values.