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A081542 Row sums of A081541. 2

%I

%S 0,3,84,1605,25926,380247,5234568,68888889,876543210,10864197531,

%T 1022851851852,112533839506173,12323644827160494,1341444755814814815,

%U 145254565866802469136

%N Row sums of A081541.

%p conca := proc(S) local resul,d,i ; resul := 0 ; for i from 1 to nops(S) do d := ilog10(op(i,S))+1 ; resul := resul*10^d+op(i,S) ; od ; resul ; end: A081542 := proc(row) local a,p,i; if row =1 then RETURN(0) ; fi ; a := [] ; p := [seq(row+1-i,i=1..row)] ; for i from 1 to row do a := [op(a),conca(subsop(i=NULL,p))] ; od: add(op(i,a),i=1..row) ; end: seq(op(A081542(n)),n=1..15) ; # _R. J. Mathar_, Jul 15 2007

%Y Cf. A081539, A081540, A081541.

%Y Cf. A081541.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Mar 29 2003

%E Needs editing - see A081539, A081540 for a model. - _N. J. A. Sloane_

%E More terms from _R. J. Mathar_, Jul 15 2007

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Last modified September 27 08:39 EDT 2021. Contains 347689 sequences. (Running on oeis4.)