A218057 - cp's OEIS frontend

A218057 a(n) = (b(n)+1)^b(n+1) + b(n+2)^(b(n+1)+1)/2, where b(n) = [n/2]*2 = A052928(n) =(0,0,2,2,4,4,...), even numbers repeated.

n	a(n)
0	2
1	5
2	41
3	593
4	4513
5	155593
6	1166225
7	72873665
8	543046721
9	53486784401
10	397441609945
11	56635031066257
12	420155471749553
13	81721424164605401
14	605653678328814113
15	154142360945389303553
16	1141616971745015134465
17	368180757129736563169825
18	2725567350297911241532841

[2, 5, 41, 593, 4513, 155593, 1166225, 72873665, 543046721, 53486784401, 397441609945, 56635031066257, 420155471749553, 81721424164605401, 605653678328814113, 154142360945389303553, 1141616971745015134465, 368180757129736563169825, 2725567350297911241532841]

cp's OEIS Frontend

A218057 a(n) = (b(n)+1)^b(n+1) + b(n+2)^(b(n+1)+1)/2, where b(n) = [n/2]*2 = A052928(n) =(0,0,2,2,4,4,...), even numbers repeated.

Table of values

List of values