login
A001278
Number of permutations of length n by rises.
(Formerly M4799 N2050)
2
1, 11, 87, 693, 5934, 55674, 572650, 6429470, 78366855, 1031378445, 14583751161, 220562730171, 3553474061452, 60765835154948, 1099353888345924, 20980355229808524, 421242574828254525, 8876636475162819615, 195887449298481357835, 4517865858233007694865, 108699311713253202373146, 2723633081926998772488606
OFFSET
4,2
REFERENCES
F. N. David, M. G. Kendall and D. E. Barton, Symmetric Function and Allied Tables, Cambridge, 1966, p. 264.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
FORMULA
a(n) = A136123(n,2). Emeric Deutsch and Vladeta Jovovic, Dec 17 2007
Conjecture: D-finite with recurrence a(n) +(-n-3)*a(n-1) +3*(n-2)*a(n-2) +2*(n-1)*a(n-3) +(-6*n+17)*a(n-4) +(-n+5)*a(n-5) +3*(n-4)*a(n-6)=0. - R. J. Mathar, Jul 01 2022
CROSSREFS
Sequence in context: A163616 A224182 A119383 * A125304 A334249 A192827
KEYWORD
nonn
EXTENSIONS
More terms from Vladeta Jovovic, Nov 21 2007
STATUS
approved