A296142 - cp's OEIS frontend

A296142 Triangle read by rows: first row is 2; given row k, define the elements of row k+1 as the (sorted) elements derived from row k by two recursion rules: (i.) if x is in row k, then (x+5)^2 is in row k+1; (ii.) if x^2 is in row k, then x is in row k+1.

n	a(n)
1	2
2	49
3	7
4	2916
5	54
6	144
7	8532241
8	12
9	2921
10	3481
11	22201
12	72799221804516
13	59
14	149
15	289
16	8532246
17	8561476
18	12152196
19	493106436
20	5299726695343845803536039441
21	17
22	2926
23	3486
24	4096
25	22206
26	23716
27	86436
28	72799221804521
29	72799307127001
30	73298956913361
31	147675989144401
32	243153962155686481

[2, 49, 7, 2916, 54, 144, 8532241, 12, 2921, 3481, 22201, 72799221804516, 59, 149, 289, 8532246, 8561476, 12152196, 493106436, 5299726695343845803536039441, 17, 2926, 3486, 4096, 22206, 23716, 86436, 72799221804521, 72799307127001, 73298956913361, 147675989144401, 243153962155686481]

cp's OEIS Frontend

A296142 Triangle read by rows: first row is 2; given row k, define the elements of row k+1 as the (sorted) elements derived from row k by two recursion rules: (i.) if x is in row k, then (x+5)^2 is in row k+1; (ii.) if x^2 is in row k, then x is in row k+1.

Table of values

List of values