A215203 - cp's OEIS frontend

A215203 a(0) = 0, a(n) = a(n - 1)*2^(n + 1) + 2^n - 1. That is, add one 0 and n 1's to the binary representation of previous term.

n	a(n)
0	0
1	1
2	11
3	183
4	5871
5	375775
6	48099263
7	12313411455
8	6304466665215
9	6455773865180671
10	13221424875890015231
11	54154956291645502388223
12	443637401941159955564326911
13	7268555193403964711965932118015
14	238176016577461115681699663643131903

[0, 1, 11, 183, 5871, 375775, 48099263, 12313411455, 6304466665215, 6455773865180671, 13221424875890015231, 54154956291645502388223, 443637401941159955564326911, 7268555193403964711965932118015, 238176016577461115681699663643131903]

cp's OEIS Frontend

A215203 a(0) = 0, a(n) = a(n - 1)*2^(n + 1) + 2^n - 1. That is, add one 0 and n 1's to the binary representation of previous term.

Table of values

List of values