A238538 - cp's OEIS frontend

A238538 A fourth-order linear divisibility sequence: a(n) = (2^n + 1)(2^(3n) - 1)/ ( (2 + 1)*(2^3 - 1) ).

n	a(n)
1	1
2	15
3	219
4	3315
5	51491
6	811395
7	12882499
8	205321155
9	3278747331
10	52408827075
11	838132189379
12	13406842675395
13	214483303960771
14	3431523432591555
15	54902699475185859
16	878429788032676035
17	14054769379960303811
18	224875452250864496835
19	3598000373385828511939

[1, 15, 219, 3315, 51491, 811395, 12882499, 205321155, 3278747331, 52408827075, 838132189379, 13406842675395, 214483303960771, 3431523432591555, 54902699475185859, 878429788032676035, 14054769379960303811, 224875452250864496835, 3598000373385828511939]

cp's OEIS Frontend

A238538 A fourth-order linear divisibility sequence: a(n) = (2^n + 1)(2^(3n) - 1)/ ( (2 + 1)*(2^3 - 1) ).

Table of values

List of values

cp's OEIS Frontend

A238538 A fourth-order linear divisibility sequence: a(n) = (2^n + 1)*(2^(3*n) - 1)/ ( (2 + 1)*(2^3 - 1) ).

Table of values

List of values

A238538 A fourth-order linear divisibility sequence: a(n) = (2^n + 1)(2^(3n) - 1)/ ( (2 + 1)*(2^3 - 1) ).