A271725 - cp's OEIS frontend

A271725 T(n,k) is an array read by rows, with n > 0 and k=1..4, where row n gives four prime numbers in increasing order with locations in right angles of each concentric square drawn on a distorted version of the Ulam spiral.

n	a(n)
1	3
2	7
3	17
4	19
5	13
6	23
7	37
8	41
9	307
10	359
11	401
12	419
13	13807
14	14159
15	14401
16	14519
17	41413
18	42023
19	42437
20	42641
21	6317683
22	6325223
23	6330257
24	6332771
25	22958473
26	22972847
27	22982437
28	22987229
29	39081253
30	39100007
31	39112517
32	39118769
33	110617807
34	110649359
35	110670401
36	110680919

[3, 7, 17, 19, 13, 23, 37, 41, 307, 359, 401, 419, 13807, 14159, 14401, 14519, 41413, 42023, 42437, 42641, 6317683, 6325223, 6330257, 6332771, 22958473, 22972847, 22982437, 22987229, 39081253, 39100007, 39112517, 39118769, 110617807, 110649359, 110670401, 110680919]

cp's OEIS Frontend

A271725 T(n,k) is an array read by rows, with n > 0 and k=1..4, where row n gives four prime numbers in increasing order with locations in right angles of each concentric square drawn on a distorted version of the Ulam spiral.

Table of values

List of values