a(n) = (n*sigma_9(n) - tau(n))/7 = (A282254(n) - A000594(n))/7, where tau is Ramanujan's tau, sigma_9(n) = Sum_{d divides n} d^9.

A337032

a(n) = (n*sigma_9(n) - tau(n))/7 = (A282254(n) - A000594(n))/7, where tau is Ramanujan's tau, sigma_9(n) = Sum_{d divides n} d^9.

Terms

    a(0) =0a(1) =150a(2) =8400a(3) =150300a(4) =1394400a(5) =8656200a(6) =40356000a(7) =153679800a(8) =498153600a(9) =1431378900a(10) =3705270000a(11) =8863150800a(12) =19694152800a(13) =41402744400a(14) =82382680800a(15) =157380332400a(16) =288000115200a(17) =511088547150a(18) =875865085200

External references