A268600 - cp's OEIS frontend

A268600 Expansion of 1/(2f(x)) + 1/(4 - 2g(x)), where f(x) = sqrt(1 - 4x) and g(x) = sqrt(1 + 4x).

n	a(n)
0	1
1	2
2	4
3	12
4	36
5	132
6	456
7	1752
8	6340
9	24660
10	91224
11	356776
12	1337896
13	5250728
14	19877904
15	78209712
16	298176516
17	1175437428
18	4505865144
19	17789574792
20	68490100536
21	270739425528
22	1046041377264
23	4139198745552
24	16039426479336
25	63522770785032
26	246761907761776
27	977995685565072
28	3807202080396240
29	15098691607042000
30	58884954519908896

[1, 2, 4, 12, 36, 132, 456, 1752, 6340, 24660, 91224, 356776, 1337896, 5250728, 19877904, 78209712, 298176516, 1175437428, 4505865144, 17789574792, 68490100536, 270739425528, 1046041377264, 4139198745552, 16039426479336, 63522770785032, 246761907761776, 977995685565072, 3807202080396240, 15098691607042000, 58884954519908896]

cp's OEIS Frontend

A268600 Expansion of 1/(2f(x)) + 1/(4 - 2g(x)), where f(x) = sqrt(1 - 4x) and g(x) = sqrt(1 + 4x).

Table of values

List of values

cp's OEIS Frontend

A268600 Expansion of 1/(2*f(x)) + 1/(4 - 2*g(x)), where f(x) = sqrt(1 - 4*x) and g(x) = sqrt(1 + 4*x).

Table of values

List of values

A268600 Expansion of 1/(2f(x)) + 1/(4 - 2g(x)), where f(x) = sqrt(1 - 4x) and g(x) = sqrt(1 + 4x).