A015520 - cp's OEIS frontend

A015520 a(n) = 2a(n-1) + 11a(n-2), a(0) = 0, a(1) = 1.

n	a(n)
0	0
1	1
2	2
3	15
4	52
5	269
6	1110
7	5179
8	22568
9	102105
10	452458
11	2028071
12	9033180
13	40375141
14	180115262
15	804357075
16	3589982032
17	16027891889
18	71545586130
19	319397983039
20	1425797413508
21	6364972640445
22	28413716829478

[0, 1, 2, 15, 52, 269, 1110, 5179, 22568, 102105, 452458, 2028071, 9033180, 40375141, 180115262, 804357075, 3589982032, 16027891889, 71545586130, 319397983039, 1425797413508, 6364972640445, 28413716829478]

cp's OEIS Frontend

A015520 a(n) = 2a(n-1) + 11a(n-2), a(0) = 0, a(1) = 1.

Table of values

List of values

cp's OEIS Frontend

A015520 a(n) = 2*a(n-1) + 11*a(n-2), a(0) = 0, a(1) = 1.

Table of values

List of values

A015520 a(n) = 2a(n-1) + 11a(n-2), a(0) = 0, a(1) = 1.