This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A045995 #38 Jan 05 2025 19:51:35 %S A045995 1,1,1,1,1,1,1,2,2,1,1,3,8,3,1,1,5,55,55,5,1,1,8,610,6765,610,8,1,1, %T A045995 13,10946,9227465,9227465,10946,13,1,1,21,317811,225851433717, %U A045995 190392490709135,225851433717,317811,21,1,1,34,14930352 %N A045995 Rows of Fibonacci-Pascal triangle. %H A045995 Reinhard Zumkeller, <a href="/A045995/b045995.txt">Rows n=0..14 of triangle, flattened</a> %H A045995 R. Whitney, <a href="https://web.archive.org/web/2024*/https://www.fq.math.ca/Scanned/13-3/advanced13-3.pdf">Problem H-254</a>, Fib. Quart., 13 (1975), p. 281. %F A045995 Take Pascal triangle (A007318) and replace each i by Fibonacci(i): a(n,k)=Fibonacci(binomial(n,k)). %e A045995 1, %e A045995 1, 1, %e A045995 1, 1, 1, %e A045995 1, 2, 2, 1, %e A045995 1, 3, 8, 3, 1, %e A045995 1, 5, 55, 55, 5, 1, %e A045995 1, 8, 610, 6765, 610, 8, 1, %e A045995 1, 13, 10946, 9227465, 9227465, 10946, 13, 1, %e A045995 1, 21, 317811, 225851433717, 190392490709135, 225851433717, 317811, 21, 1, %e A045995 ... %p A045995 A045995 := proc(n,k) %p A045995 combinat[fibonacci](binomial(n,k)) ; %p A045995 end proc: # _R. J. Mathar_, Dec 03 2014 %t A045995 Flatten[Table[Fibonacci[Binomial[n,k]],{n,0,10},{k,0,n}]] (* _Harvey P. Dale_, Dec 31 2013 *) %o A045995 (Haskell) %o A045995 a045995 n k = a045995_tabl !! n !! k %o A045995 a045995_row n = a045995_tabl !! n %o A045995 a045995_tabl = map (map (a000045 . fromInteger)) a007318_tabl %o A045995 -- _Reinhard Zumkeller_, Dec 29 2011 %Y A045995 Cf. A000045, A007318, A006449 (row sums), A081667. %Y A045995 Main diagonal gives A281450. %K A045995 nonn,easy,nice,tabl %O A045995 0,8 %A A045995 _N. J. A. Sloane_ %E A045995 More terms from _David W. Wilson_