A135471 - cp's OEIS frontend

A135471 a(n) = Sum{i=1..n} ( i2^(i-1) ) - ( A002024(n)(A002024(n)+1)/2 - n ) * 2^(A002024(n)-1).

n	a(n)
1	1
2	3
3	17
4	41
5	125
6	321
7	745
8	1777
9	4089
10	9217
11	20417
12	45009
13	98273
14	212977
15	458753
16	982881
17	2097025
18	4456353
19	9437121
20	19922913
21	41943041
22	88080001
23	184549057
24	385875713
25	805306177
26	1677721473
27	3489660865
28	7247757313
29	15032384641
30	31138512129
31	64424508801

[1, 3, 17, 41, 125, 321, 745, 1777, 4089, 9217, 20417, 45009, 98273, 212977, 458753, 982881, 2097025, 4456353, 9437121, 19922913, 41943041, 88080001, 184549057, 385875713, 805306177, 1677721473, 3489660865, 7247757313, 15032384641, 31138512129, 64424508801]

cp's OEIS Frontend

A135471 a(n) = Sum{i=1..n} ( i2^(i-1) ) - ( A002024(n)(A002024(n)+1)/2 - n ) * 2^(A002024(n)-1).

Table of values

List of values

cp's OEIS Frontend

A135471 a(n) = Sum{i=1..n} ( i*2^(i-1) ) - ( A002024(n)*(A002024(n)+1)/2 - n ) * 2^(A002024(n)-1).

Table of values

List of values

A135471 a(n) = Sum{i=1..n} ( i2^(i-1) ) - ( A002024(n)(A002024(n)+1)/2 - n ) * 2^(A002024(n)-1).