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A145108
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Multiples of 4 that are primally tight and have strictly ascending powers.
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0
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4, 8, 16, 32, 64, 108, 128, 256, 324, 512, 648, 972, 1024, 1944, 2048, 2916, 3888, 4096, 5832, 8192, 8748, 11664, 16384, 17496, 23328, 26244, 32768, 34992, 52488, 65536, 67500, 69984, 78732, 104976, 131072, 139968, 157464, 209952, 236196, 262144
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| All numbers of the form 2^k0*p_1^k1*p_2^k2*...*p_n^k_n, where 2 <= k0 < k1 < k2 < ... < k_n and the p_i are n successive primes.
Subset of A073491, A133808, A133809, A133810 and A133811.
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CROSSREFS
| Cf. A025487, A087980, A073491, A133808, A133809, A133810, A133811, A133812, A133813
Sequence in context: A036313 A121986 A172042 * A108569 A196875 A111073
Adjacent sequences: A145105 A145106 A145107 * A145109 A145110 A145111
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KEYWORD
| nonn
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AUTHOR
| Reikku Kulon (reikku(AT)gmail.com), Oct 02 2008
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