This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A300580 #5 Mar 09 2018 21:15:40 %S A300580 1,0,0,0,0,1,0,3,1,3,2,11,1,18,6,9,5,43,5,65,7,31,30,137,5,115,59,84, %T A300580 26,379,19,519,42,213,197,323,23,1267,340,489,50,2213,107,2897,221, %U A300580 375,938,4871,61,3733,662,2193,553,10218,409,4241,310,4341,3685,20586,154,25792,5635,2862,990,12806 %N A300580 Number of partitions of n into prime power parts (not including 1) that do not divide n. %H A300580 <a href="/index/Par#part">Index entries for sequences related to partitions</a> %e A300580 a(10) = 2 because we have [7, 3] and [4, 3, 3]. %t A300580 Table[SeriesCoefficient[Product[1/(1 - Boole[Mod[n, k] != 0 && PrimePowerQ[k]] x^k), {k, 1, n}], {x, 0, n}], {n, 0, 65}] %Y A300580 Cf. A023894, A098743, A128515, A246655, A284289, A300584. %K A300580 nonn %O A300580 0,8 %A A300580 _Ilya Gutkovskiy_, Mar 09 2018