A202628 - cp's OEIS frontend

A202628 a(n) = (4n+1)(2^(4n+1)+(-1)^n2^(2*n+1)+1).

n	a(n)
0	5
1	125
2	4905
3	104845
4	2236945
5	43997205
6	839065625
7	15568306205
8	283472166945
9	5085221879845
10	90160039460905
11	1583296366510125
12	27584549361811505
13	477381553387733045
14	8214565750925426745
15	140656423431038828605
16	2398076730140587458625
17	40730410912379868020805
18	689465506509001244803145
19	11635911013748474608877645

[5, 125, 4905, 104845, 2236945, 43997205, 839065625, 15568306205, 283472166945, 5085221879845, 90160039460905, 1583296366510125, 27584549361811505, 477381553387733045, 8214565750925426745, 140656423431038828605, 2398076730140587458625, 40730410912379868020805, 689465506509001244803145, 11635911013748474608877645]

cp's OEIS Frontend

A202628 a(n) = (4n+1)(2^(4n+1)+(-1)^n2^(2*n+1)+1).

Table of values

List of values

cp's OEIS Frontend

A202628 a(n) = (4*n+1)*(2^(4*n+1)+(-1)^n*2^(2*n+1)+1).

Table of values

List of values

A202628 a(n) = (4n+1)(2^(4n+1)+(-1)^n2^(2*n+1)+1).