Binary representation of n interpreted in base p, where p is the smallest prime factor of n: p=A020639(n).
1, 2, 4, 4, 26, 6, 57, 8, 28, 10, 1343, 12, 2367, 14, 40, 16, 83522, 18, 130341, 20, 91
1 seqfan posts
Sun Dec 28 18:50:04 CET 2008 [seqfan] An interesting coincidence