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Search: id:A130596
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| 1, 3, 6, 16, 27, 39, 52, 72, 93, 115, 145, 176, 276, 377, 479, 582, 692, 803, 915, 1028, 1148, 1269, 1391, 1521, 1721, 1922, 2124, 2334, 2545, 2757, 2977, 3198, 3498, 3799, 4109, 4420, 5420, 6421, 7423, 8426, 9436, 10447, 11459, 12472, 13492, 14513, 15535
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OFFSET
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1,2
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COMMENT
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The skinny partial sums of skinny numbers begin: a(1) = 1, a(2) = 3. The primes in the sequence begin: a(2) = 3, a(15) = 479, a(15) = 1721, a(38) = 6421, a(52) = 20899. The perfect powers in the sequence begin a(4) = 16 = 2^4, a(5) = 27 = 3^3, a(24) = 1521 = 39^2.
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EXAMPLE
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a(36) = 4420 = 1+2+3+10+11+12+13+20+21+22+30+31+100+101+102+103+110+111+112+113+120+121+122+130+200+201+202+210+211+212+220+221+300+301+310+311
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CROSSREFS
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Sequence in context: A009196 A116613 A127935 this_sequence A032247 A052281 A122742
Adjacent sequences: A130593 A130594 A130595 this_sequence A130597 A130598 A130599
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KEYWORD
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base,easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost2(AT)yahoo.com), Jun 17 2007
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