Numbers k such that the sum of the first k odd composites is palindromic.

Terms

a(0) =1a(1) =12a(2) =25a(3) =61a(4) =108a(5) =211a(6) =1344a(7) =2339a(8) =10539a(9) =78409a(10) =283181a(11) =1748747a(12) =1795423a(13) =2386702a(14) =2819089a(15) =179101605a(16) =1923088106a(17) =2822581688a(18) =7794689270a(19) =17381011919a(20) =25635268093a(21) =28780043265a(22) =97973526253