Subsequence of A145820. The next few terms are at n = 186, 236, 522, 812, 1064 and 1292, of that sequence. A145820(1292) is a prime of 331 digits.
Table of n, a(n) for n=1..10.
Subsequence of A000040 and of A145820.
Sequence in context: A251079 A248745 A033257 * A354284 A142655 A140040
Adjacent sequences: A145818 A145819 A145820 * A145822 A145823 A145824
James R. Buddenhagen, Oct 20 2008