A160019 - OEIS

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A160019

Triangle: Lodumo_2 applied to each row of Pascal's triangle .

3

1, 1, 3, 1, 0, 3, 1, 3, 5, 7, 1, 0, 2, 4, 3, 1, 3, 0, 2, 5, 7, 1, 0, 3, 2, 5, 4, 7, 1, 3, 5, 7, 9, 11, 13, 15, 1, 0, 2, 4, 6, 8, 10, 12, 3, 1, 3, 0, 2, 4, 6, 8, 10, 5, 7, 1, 0, 3, 2, 4, 6, 8, 10, 5, 12, 7, 1, 3, 5, 7, 0, 2, 4, 6, 9, 11, 13, 15, 1, 0, 2, 4, 3, 6, 8, 10, 5, 12, 14, 16, 7

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

0,3

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..1325

OEIS wiki, Lodumo transform

FORMULA

T(n,0)=A000012(n)=1; T(n,1)=A010674(n). - Philippe Deléham, Nov 15 2011

EXAMPLE

Triangle begins:

1;

1, 3;

1, 0, 3;

1, 3, 5, 7;

1, 0, 2, 4, 3;

1, 3, 0, 2, 5, 7; ...

PROG

(PARI) \\ here S(n, k) is A047999.

S(n, k)={bitand(n-k, k)==0}

row(n)={my(v=vector(n+1), b=0); for(k=0, n, if(S(n, k), b++; v[1+k]=2*b-1, v[1+k]=2*(k-b))); v}

{ for(n=0, 10, print(row(n))) } \\ Andrew Howroyd, Feb 02 2020

CROSSREFS

Row sums are A160020.

Cf. A007318, A047999, A261363.

Sequence in context: A035674 A058600 A133704 * A227054 A265605 A035629

Adjacent sequences: A160016 A160017 A160018 * A160020 A160021 A160022

KEYWORD

easy,nonn,tabl

AUTHOR

Philippe Deléham, Apr 29 2009, May 02 2009

STATUS

approved