Least positive integer that can be represented as sum of semiprime and a triangular number in exactly n ways. Triangular numbers include t(0)=0 and (1)=1.
A100591
Least positive integer that can be represented as sum of semiprime and a triangular number in exactly n ways. Triangular numbers include t(0)=0 and (1)=1.
Terms
- a(0) =1a(1) =4a(2) =7a(3) =10a(4) =35a(5) =25a(6) =49a(7) =61a(8) =121a(9) =140a(10) =211a(11) =268a(12) =224a(13) =392a(14) =472a(15) =517a(16) =565a(17) =529a(18) =707a(19) =1006a(20) =1039a(21) =994a(22) =1213a(23) =989a(24) =1274a(25) =1717a(26) =1769a(27) =1822a(28) =2047a(29) =2272
External references
- oeis: A100591