This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A151790 #4 Aug 23 2025 18:00:22
%S A151790 1,6,11,31,36,56,76,156,161,181,201,281,301,381,461,781,786,806,826,
%T A151790 906,926,1006,1086,1406,1426,1506,1586,1906,1986,2306,2626,3906,3911,
%U A151790 3931,3951,4031,4051,4131,4211,4531,4551,4631,4711,5031,5111,5431,5751,7031,7051
%N A151790 Partial sums of A151789.
%t A151790 nxt[{n_,a_}]:={n+1,5*4^(Total[IntegerDigits[n,2]]-1)}; Accumulate[NestList[nxt,{1,1},70][[;;,2]]] (* _Harvey P. Dale_, Aug 23 2025 *)
%K A151790 nonn,changed
%O A151790 1,2
%A A151790 _N. J. A. Sloane_, Jun 25 2009