A010905 - cp's OEIS frontend

A010905 Pisot sequence E(4,15): a(n) = floor(a(n-1)^2/a(n-2)+1/2) for n>1, a(0)=4, a(1)=15.

n	a(n)
0	4
1	15
2	56
3	209
4	780
5	2911
6	10864
7	40545
8	151316
9	564719
10	2107560
11	7865521
12	29354524
13	109552575
14	408855776
15	1525870529
16	5694626340
17	21252634831
18	79315912984
19	296011017105
20	1104728155436
21	4122901604639
22	15386878263120
23	57424611447841
24	214311567528244

[4, 15, 56, 209, 780, 2911, 10864, 40545, 151316, 564719, 2107560, 7865521, 29354524, 109552575, 408855776, 1525870529, 5694626340, 21252634831, 79315912984, 296011017105, 1104728155436, 4122901604639, 15386878263120, 57424611447841, 214311567528244]

cp's OEIS Frontend

A010905 Pisot sequence E(4,15): a(n) = floor(a(n-1)^2/a(n-2)+1/2) for n>1, a(0)=4, a(1)=15.

Table of values

List of values