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Search: id:A062247
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| A062247 |
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Let f(h) = A141900(h) = 2^h * 3^i * 5^j * ... be the smallest term in A141586 that is divisible by 2^h but not by 2^(h+1). Sequence gives values of h where i increases. |
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+0
1
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| 0, 2, 8, 24, 26, 48, 80, 120, 168, 242, 288, 360, 528, 728, 840, 960, 1330, 1368, 1680, 1848, 2186, 2208, 2808, 3480, 3720, 4488, 5040, 5328, 6240, 6560, 6888, 7920, 9408
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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Pairs (h,i) where A141900 contains a term 2^h*3^i*... for the first time, with a dash if that value of i never occurs:
h i
0 0
2 1
- 2
8 3
24 4
26 5
48 6
80 7
- 8
120 9
168 10
242 11
288 12
360 13
528 14
728 15
840 16
960 17
1330 18
1368 19
1680 20
...
The missing values of i for h <= 10000 are 2, 8 and 26.
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CROSSREFS
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Cf. A141586, A141900.
Sequence in context: A072842 A138387 A007346 this_sequence A084744 A122547 A152132
Adjacent sequences: A062244 A062245 A062246 this_sequence A062248 A062249 A062250
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Nov 24 2008
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