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A039948 A triangle related to A000045 (Fibonacci numbers). 4
1, 1, 1, 4, 2, 1, 18, 12, 3, 1, 120, 72, 24, 4, 1, 960, 600, 180, 40, 5, 1, 9360, 5760, 1800, 360, 60, 6, 1, 105840, 65520, 20160, 4200, 630, 84, 7, 1, 1370880, 846720, 262080, 53760, 8400, 1008, 112, 8, 1, 19958400, 12337920, 3810240 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

E.g.f. for column m: x^m/(m!*(1-x-x^2)), m >= 0.

LINKS

Table of n, a(n) for n=0..47.

P. R. J. Asveld, Fibonacci-like differential equations with a polynomial nonhomogeneous term, Fib. Quart. 27 (1989), 303-309.

FORMULA

a(n, m) = n!*Fibonacci(n-m+1)/m!, n >= m >= 0.

EXAMPLE

Triangle begins :

1

1, 1

4, 2, 1

18, 12, 3, 1

120, 72, 24, 4, 1

960, 600, 180, 40, 5, 1

... - Philippe Deléham, Nov 08 2011

CROSSREFS

Cf. A005442, A005443.

Sequence in context: A256039 A152391 A144088 * A111536 A111559 A224798

Adjacent sequences:  A039945 A039946 A039947 * A039949 A039950 A039951

KEYWORD

nonn,tabl

AUTHOR

Wolfdieter Lang

STATUS

approved

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Last modified April 22 10:24 EDT 2019. Contains 322330 sequences. (Running on oeis4.)