A119563 - cp's OEIS frontend

A119563 Define F(n) = 2^(2^n)+1 = n-th Fermat number, M(n) = 2^n-1 = the n-th Mersenne number. Then a(n) = F(n)+M(n)-1 = 2^(2^n) + 2^n - 1.

n	a(n)
0	2
1	5
2	19
3	263
4	65551
5	4294967327
6	18446744073709551679
7	340282366920938463463374607431768211583
8	115792089237316195423570985008687907853269984665640564039457584007913129640191

[2, 5, 19, 263, 65551, 4294967327, 18446744073709551679, 340282366920938463463374607431768211583, 115792089237316195423570985008687907853269984665640564039457584007913129640191]

cp's OEIS Frontend

A119563 Define F(n) = 2^(2^n)+1 = n-th Fermat number, M(n) = 2^n-1 = the n-th Mersenne number. Then a(n) = F(n)+M(n)-1 = 2^(2^n) + 2^n - 1.

Table of values

List of values