Numbers m such that m = Sum_{i=x..y} i = (10^k)*y + x, where 0 <= x < y, 0 <= x < 10^k for some positive integers k.

A186076

Numbers m such that m = Sum_{i=x..y} i = (10^k)*y + x, where 0 <= x < y, 0 <= x < 10^k for some positive integers k.

Terms

    a(0) =190a(1) =204a(2) =216a(3) =19900a(4) =20328a(5) =21252a(6) =21762a(7) =23287a(8) =23490a(9) =1999000a(10) =2002077a(11) =2006118a(12) =2077402a(13) =2132532a(14) =2177622a(15) =199990000a(16) =202272147a(17) =202722352a(18) =203872812a(19) =207093834a(20) =213325332a(21) =217006075a(22) =217776222a(23) =227367888a(24) =232728727a(25) =235629162a(26) =19999900000a(27) =20001201612

External references