Quintisection A061037(5*n-2).

Terms

a(0) =0a(1) =5a(2) =15a(3) =165a(4) =20a(5) =525a(6) =195a(7) =1085a(8) =90a(9) =1845a(10) =575a(11) =2805a(12) =210a(13) =3965a(14) =1155a(15) =5325a(16) =380a(17) =6885a(18) =1935a(19) =8645a(20) =600a(21) =10605a(22) =2915a(23) =12765a(24) =870a(25) =15125a(26) =4095a(27) =17685a(28) =1190a(29) =20445