A103201 - cp's OEIS frontend

A103201 a(1) = 11, a(2) = 19, a(3) = 89, a(4) = 151; for n >= 5, a(n) = sqrt(a(n-4)^2 + 60a(n-2)^2 + 4a(n-2)sqrt(210 + 15a(n-4)^2)).

n	a(n)
1	11
2	19
3	89
4	151
5	701
6	1189
7	5519
8	9361
9	43451
10	73699
11	342089
12	580231
13	2693261
14	4568149
15	21203999
16	35964961
17	166938731
18	283151539
19	1314305849
20	2229247351
21	10347508061
22	17550827269
23	81465758639
24	138177370801
25	641378561051

[11, 19, 89, 151, 701, 1189, 5519, 9361, 43451, 73699, 342089, 580231, 2693261, 4568149, 21203999, 35964961, 166938731, 283151539, 1314305849, 2229247351, 10347508061, 17550827269, 81465758639, 138177370801, 641378561051]

cp's OEIS Frontend

A103201 a(1) = 11, a(2) = 19, a(3) = 89, a(4) = 151; for n >= 5, a(n) = sqrt(a(n-4)^2 + 60a(n-2)^2 + 4a(n-2)sqrt(210 + 15a(n-4)^2)).

Table of values

List of values

cp's OEIS Frontend

A103201 a(1) = 11, a(2) = 19, a(3) = 89, a(4) = 151; for n >= 5, a(n) = sqrt(a(n-4)^2 + 60*a(n-2)^2 + 4*a(n-2)*sqrt(210 + 15*a(n-4)^2)).

Table of values

List of values

A103201 a(1) = 11, a(2) = 19, a(3) = 89, a(4) = 151; for n >= 5, a(n) = sqrt(a(n-4)^2 + 60a(n-2)^2 + 4a(n-2)sqrt(210 + 15a(n-4)^2)).