Weird numbers k such that k-1 and k+1 are both sums of subsets of the aliquot divisors of k.

Terms

a(0) =70a(1) =4030a(2) =5830a(3) =17272a(4) =243892a(5) =4199030a(6) =11339816a(7) =11547352a(8) =13885970a(9) =24450010a(10) =31699430a(11) =32284330a(12) =34041370a(13) =34169630a(14) =42251930a(15) =50761810a(16) =67727110a(17) =67820390a(18) =85389368a(19) =89283592a(20) =141659096a(21) =146764264a(22) =162079768a(23) =173482552a(24) =259858324a(25) =410832532a(26) =411643576a(27) =486224072