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 A048165 Expansion of Product_{k > 0} 1/(1 + x^prime(k)). 14
 1, 0, -1, -1, 1, 0, 0, -1, 1, 0, 1, -2, 1, -1, 2, -2, 2, -3, 3, -3, 4, -4, 5, -6, 6, -6, 8, -9, 9, -11, 12, -13, 14, -16, 19, -19, 21, -25, 26, -28, 32, -36, 38, -41, 46, -50, 55, -60, 65, -70, 77, -85, 91, -99, 108, -116, 126, -138, 149, -160, 174, -188, 202, -219, 237, -255, 274, -296 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,12 LINKS Seiichi Manyama, Table of n, a(n) for n = 0..10000 FORMULA a(n) = A184198(n) - A184199(n). - Vaclav Kotesovec, Jan 11 2021 MATHEMATICA nn=20; ser=Product[1/(1+x^p), {p, Select[Range[nn], PrimeQ]}]; Table[SeriesCoefficient[ser, {x, 0, n}], {n, nn}] (* Gus Wiseman, Jun 06 2018 *) CROSSREFS Cf. A000005, A000040, A000586, A000607, A001221, A008683, A083399, A088705, A280954, A305614. Sequence in context: A029307 A161066 A161105 * A161040 A180234 A131059 Adjacent sequences:  A048162 A048163 A048164 * A048166 A048167 A048168 KEYWORD sign AUTHOR STATUS approved

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Last modified September 27 08:39 EDT 2021. Contains 347689 sequences. (Running on oeis4.)