A265438 Smallest semiprime that is the sum of n consecutive semiprimes.
4, 10, 25, 39, 69, 58, 133, 122, 249, 209, 185, 219, 254, 327, 458, 377, 473, 579, 745, 589, 951, 898, 1047, 843, 917, 1382, 1157, 1243, 1247, 1678, 1514, 1895, 1703, 1707, 2138, 2147, 2599, 2157, 2509, 2515, 2519, 2642, 2771, 3566, 4126, 3317, 3599, 3891, 4198, 3755, 4369, 4223, 4227
Offset: 1
Keywords
Examples
a(1) = 4 = A001358(1), a(2) = 10 = A001358(3) = A092192(1) = A001358(1)+A001358(2) = 4+6, a(3) = 25 = A001358(9) = A131610(1), a(4) = 39 = A001358(15) = A158339(1), a(5) = 69 = A001358(24) = A254712(1), a(6) = 58 = A001358(21) = A266451(1).
Links
- Zak Seidov, Table of n, a(n) for n = 1..1000
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