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A114707 a(1)=1. For n>1, a(n) = a(n-1) + (number of distinct primes dividing n but not a(n-1)). +0
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1, 2, 3, 4, 5, 7, 7, 8, 9, 11, 11, 13, 13, 15, 15, 16, 17, 19, 19, 21, 21, 23, 23, 25, 25, 27, 27, 29, 29, 32, 33, 34, 36, 37, 39, 40, 41, 43, 45, 46, 47, 50, 51, 53, 55, 57, 58, 59, 60, 60, 61, 63, 64, 65, 66, 67, 69, 71, 72, 73, 74, 75, 76, 76, 78, 79, 80, 81, 82, 84, 85, 87 (list; graph; listen)
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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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