a(n) = a(n-1) + s, where s is the least square >= a(n-1) and the first digit of s equals the first digit of a(n-1). a(0)=1.

A175529

a(n) = a(n-1) + s, where s is the least square >= a(n-1) and the first digit of s equals the first digit of a(n-1). a(0)=1.

Terms

    a(0) =1a(1) =2a(2) =27a(3) =252a(4) =508a(5) =1037a(6) =2126a(7) =4335a(8) =8691a(9) =17527a(10) =35216a(11) =70560a(12) =141316a(13) =282692a(14) =565716a(15) =1132725a(16) =2266950a(17) =4534986a(18) =9071886a(19) =18144030a(20) =36291630a(21) =72592255a(22) =145199696a(23) =290402196a(24) =580831960a(25) =1161690161a(26) =2323409217a(27) =4646842021a(28) =9293718245a(29) =18587449461

External references