A263249 - cp's OEIS frontend

A263249 Expansion of e.g.f.: 2cos(rx)^2 / (1 + cos(r*x)^2) where r = sqrt(2), even terms only.

n	a(n)
0	1
1	-2
2	-8
3	112
4	9088
5	310528
6	-14701568
7	-4554426368
8	-458243735552
9	37024075153408
10	29290212127670272
11	6224109737622372352
12	-631398107821314670592
13	-1112417825593218314534912
14	-422420220419591934719295488
15	41942640830461258871206838272
16	165285368668709582104936440659968
17	101410495525765825487306697440493568

[1, -2, -8, 112, 9088, 310528, -14701568, -4554426368, -458243735552, 37024075153408, 29290212127670272, 6224109737622372352, -631398107821314670592, -1112417825593218314534912, -422420220419591934719295488, 41942640830461258871206838272, 165285368668709582104936440659968, 101410495525765825487306697440493568]

cp's OEIS Frontend

A263249 Expansion of e.g.f.: 2cos(rx)^2 / (1 + cos(r*x)^2) where r = sqrt(2), even terms only.

Table of values

List of values

cp's OEIS Frontend

A263249 Expansion of e.g.f.: 2*cos(r*x)^2 / (1 + cos(r*x)^2) where r = sqrt(2), even terms only.

Table of values

List of values

A263249 Expansion of e.g.f.: 2cos(rx)^2 / (1 + cos(r*x)^2) where r = sqrt(2), even terms only.