A101645 Third row of array in A101385.

21, 144, 987, 1008, 6765, 6786, 6909, 46368, 46389, 46512, 47355, 47376, 317811, 317832, 317955, 318798, 318819, 324576, 324597, 324720, 2178309, 2178330, 2178453, 2179296, 2179317, 2185074, 2185095, 2185218, 2224677, 2224698

Offset

1,1

Links

Table of n, a(n) for n=1..30.

Mathematica

zeck[n_Integer] := Block[{k = Ceiling[ Log[ GoldenRatio, n*Sqrt[5]]], t = n, fr = {}}, While[k > 1, If[t >= Fibonacci[k], AppendTo[fr, 1]; t = t - Fibonacci[k], AppendTo[fr, 0]]; k-- ]; FromDigits[fr]]; kfpv[n_, m_] := Block[{y = Reverse[IntegerDigits[zeck[n]]], z = Reverse[IntegerDigits[zeck[m]]]}, Sum[ y[[i]]*z[[j]]*Fibonacci[(i + 1)(j + 1)], {i, Length[y]}, {j, Length[z]}]]; (* Robert G. Wilson v, Feb 09 2005 *)
Table[ kfpv[n, 3], {n, 30}] (* Robert G. Wilson v, Feb 09 2005 *)

Crossrefs

Cf. A101385.

Sequence in context: A003702 A221785 A301866 * A230692 A267992 A060493

Adjacent sequences: A101642 A101643 A101644 * A101646 A101647 A101648

Keyword

nonn,easy

Author

N. J. A. Sloane, Jan 25 2005, Jan 27 2005

Extensions

More terms from David Applegate, Jan 26 2005

More terms from Robert G. Wilson v, Feb 09 2005

Status

approved