A033898 Sort then Add, a(1)=15.

15, 30, 33, 66, 132, 255, 510, 525, 780, 858, 1446, 2892, 5181, 6339, 9708, 10497, 11976, 23655, 47211, 58458, 104046, 105492, 117951, 229530, 251889, 377778, 755556, 1311123, 2422356, 4645812, 5890380, 5926269, 8182968, 9451857, 10907646

Offset: 1

Author

N. J. A. Sloane, David W. Wilson

Keywords

• nonn
• base
• easy

Crossrefs

Cf. A033860.

Programs

Maple

A033898 := proc(n)
    option remember ;
    if n =1 then
        15;
    else
        A070196(procname(n-1)) ;
    end if;
end proc:
seq(A033898(n),n=1..100) ; # R. J. Mathar, Feb 03 2025