A210762 Triangle read by rows in which row n lists the positive integers smaller than the currently largest number in Recamán's sequence A005132 after the n-th stage, but not yet present in Recamán's sequence.

2, 2, 4, 5, 4, 5, 4, 5, 4, 5, 8, 9, 10, 11, 12, 4, 5, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 4, 5, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 4, 5, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 4, 5, 8, 9, 10, 14, 15, 16, 17, 18, 19, 4, 5, 8, 9, 10, 14, 15, 16, 17

Offset

2,1

Comments

The number of positive integers in row n is A210612(n).

Links

Table of n, a(n) for n=2..73.

Index entries for sequences related to Recamán's sequence

Example

Written as an irregular triangle:
2;
2, 4, 5;
4, 5;
4, 5;
4, 5, 8, 9, 10, 11, 12;
4, 5, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19;
4, 5, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19;
4, 5, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19;
4, 5, 8, 9, 10, 14, 15, 16, 17, 18, 19;

Maple

A210762 := proc(n)
        local L, maxa ;
        rec := [seq(A005132(j), j=0..n)] ;
        maxa := max(op(rec)) ;
        L := [] ;
        for i from 0 to maxa do
                if not member(i, rec) then
                        L := [op(L), i] ;
                end if;
        end do;
        if nops(L) = 0 then
                return [0] ;
        end if;
        L ;
end proc:
seq(op(A210762(n)), n=1..11) ; # R. J. Mathar, Apr 01 2012

Crossrefs

Cf. A005132, A210606-A210613.

Sequence in context: A179821 A292272 A292248 * A302985 A302983 A377414

Adjacent sequences: A210759 A210760 A210761 * A210763 A210764 A210765

Keyword

nonn,tabf,less

Author

Omar E. Pol, Mar 25 2012

Status

approved