A110428 - cp's OEIS frontend

A110428 a(1) = 1 and a(2) = 2. Subsequent terms are generated like this: if a(m) is the last term available -- say a(2) -- then a(m+1) = a(m) * a(m-1), a(m+2) = a(m) * a(m-1) * a(m-2), ..., a(2m-1) = a(m) a(m-1) * a(m-2) * ... * a(2) * a(1), a(2m) = a(2m-1) * a(2*m-2), and so on.

n	a(n)
1	1
2	2
3	2
4	4
5	4
6	16
7	32
8	64
9	64
10	4096
11	131072
12	2097152
13	8388608
14	33554432
15	67108864
16	134217728
17	134217728
18	18014398509481984
19	1208925819614629174706176
20	40564819207303340847894502572032
21	340282366920938463463374607431768211456

[1, 2, 2, 4, 4, 16, 32, 64, 64, 4096, 131072, 2097152, 8388608, 33554432, 67108864, 134217728, 134217728, 18014398509481984, 1208925819614629174706176, 40564819207303340847894502572032, 340282366920938463463374607431768211456]

cp's OEIS Frontend

A110428 a(1) = 1 and a(2) = 2. Subsequent terms are generated like this: if a(m) is the last term available -- say a(2) -- then a(m+1) = a(m) * a(m-1), a(m+2) = a(m) * a(m-1) * a(m-2), ..., a(2m-1) = a(m) a(m-1) * a(m-2) * ... * a(2) * a(1), a(2m) = a(2m-1) * a(2*m-2), and so on.

Table of values

List of values

cp's OEIS Frontend

A110428 a(1) = 1 and a(2) = 2. Subsequent terms are generated like this: if a(m) is the last term available -- say a(2) -- then a(m+1) = a(m) * a(m-1), a(m+2) = a(m) * a(m-1) * a(m-2), ..., a(2*m-1) = a(m) * a(m-1) * a(m-2) * ... * a(2) * a(1), a(2*m) = a(2*m-1) * a(2*m-2), and so on.

Table of values

List of values

A110428 a(1) = 1 and a(2) = 2. Subsequent terms are generated like this: if a(m) is the last term available -- say a(2) -- then a(m+1) = a(m) * a(m-1), a(m+2) = a(m) * a(m-1) * a(m-2), ..., a(2m-1) = a(m) a(m-1) * a(m-2) * ... * a(2) * a(1), a(2m) = a(2m-1) * a(2*m-2), and so on.