A103200 - cp's OEIS frontend

A103200 a(1)=1, a(2)=2, a(3)=11, a(4)=19; a(n) = a(n-4) + sqrt(60a(n-2)^2 + 60a(n-2) + 1) for n >= 5.

n	a(n)
1	1
2	2
3	11
4	19
5	90
6	153
7	712
8	1208
9	5609
10	9514
11	44163
12	74907
13	347698
14	589745
15	2737424
16	4643056
17	21551697
18	36554706
19	169676155
20	287794595
21	1335857546
22	2265802057
23	10517184216
24	17838621864
25	82801616185
26	140443172858
27	651895745267
28	1105706761003
29	5132364345954

[1, 2, 11, 19, 90, 153, 712, 1208, 5609, 9514, 44163, 74907, 347698, 589745, 2737424, 4643056, 21551697, 36554706, 169676155, 287794595, 1335857546, 2265802057, 10517184216, 17838621864, 82801616185, 140443172858, 651895745267, 1105706761003, 5132364345954]

cp's OEIS Frontend

A103200 a(1)=1, a(2)=2, a(3)=11, a(4)=19; a(n) = a(n-4) + sqrt(60a(n-2)^2 + 60a(n-2) + 1) for n >= 5.

Table of values

List of values

cp's OEIS Frontend

A103200 a(1)=1, a(2)=2, a(3)=11, a(4)=19; a(n) = a(n-4) + sqrt(60*a(n-2)^2 + 60*a(n-2) + 1) for n >= 5.

Table of values

List of values

A103200 a(1)=1, a(2)=2, a(3)=11, a(4)=19; a(n) = a(n-4) + sqrt(60a(n-2)^2 + 60a(n-2) + 1) for n >= 5.