2*a(n) is the first of 5 consecutive even numbers that are sums of divisors, i.e., terms of A000203.
A342560
2*a(n) is the first of 5 consecutive even numbers that are sums of divisors, i.e., terms of A000203.
Terms
- a(0) =18a(1) =78a(2) =270a(3) =306a(4) =558a(5) =846a(6) =1098a(7) =1182a(8) =1188a(9) =1590a(10) =1608a(11) =1626a(12) =2106a(13) =2196a(14) =2298a(15) =2538a(16) =2718a(17) =2868a(18) =4368a(19) =4590a(20) =4716a(21) =4806a(22) =4926a(23) =4950a(24) =6078a(25) =7866a(26) =8646a(27) =8700a(28) =8952a(29) =9150
External references
- oeis: A342560