A046207 Numbers to the right of the central elements in the triangle of denominators in Leibniz's Harmonic Triangle.

2, 3, 12, 4, 20, 5, 60, 30, 6, 105, 42, 7, 280, 168, 56, 8, 504, 252, 72, 9, 1260, 840, 360, 90, 10, 2310, 1320, 495, 110, 11, 5544, 3960, 1980, 660, 132, 12, 10296, 6435, 2860, 858, 156, 13, 24024, 18018, 10010, 4004, 1092, 182, 14, 45045, 30030, 15015, 5460

Offset

1,1

References

L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 83, Problem 25.

Links

Table of n, a(n) for n=1..53.

Crossrefs

Cf. A003506.

Sequence in context: A162846 A072734 A223524 * A030611 A252177 A214011

Adjacent sequences: A046204 A046205 A046206 * A046208 A046209 A046210

Keyword

tabf,nonn,easy

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers, Dec 13 1999

Status

approved