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Search: id:A053240
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| A053240 |
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n for which values not equal to 2 occur in the expansion of A053238. |
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+0
8
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| 5, 20, 21, 29, 34, 49, 50, 56, 57, 65, 70, 79, 80, 94, 99, 108, 109, 123, 132, 133, 145, 146, 154, 155, 170, 171, 177, 178, 198, 200, 201, 227, 230, 231, 239, 244, 253, 254, 259, 260, 274, 277, 278, 280, 289, 290, 304, 307, 308, 310, 327, 332, 340, 341, 347
(list; graph; listen)
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OFFSET
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1,1
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MAPLE
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with(numtheory): f := [seq( `if`((sigma(i) > sigma(i+1)), i, print( )), i=1..5000)];
seq( `if`(f[i+1] - f[i] <> 2, i, print( )), i=1..1000);
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CROSSREFS
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Cf. A000203, A053226, A053238, A053239, A053241, A053242, A053243, A053244, A053245.
Sequence in context: A030696 A098047 A101728 this_sequence A034123 A088973 A005240
Adjacent sequences: A053237 A053238 A053239 this_sequence A053241 A053242 A053243
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KEYWORD
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nonn
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AUTHOR
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Asher Auel (asher.auel(AT)reed.edu) Jan 10, 2000
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