

A340495


Records in first differences of A340494.


3



2, 3, 8, 33, 138, 563, 2268, 9093, 36398, 145623, 582528, 2330153, 9320658, 37282683, 149130788, 596523213, 2386092918, 9544371743, 38177487048, 152709948273, 610839793178, 2443359172803
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


LINKS

Table of n, a(n) for n=1..22.
Rémy Sigrist, C program for A340495


FORMULA

The sequence a(n)4*a(n1) appears to be 5, 4, 1, 6, 11, 16, 21, 26, 31, 36, 41, 46, ... which is essentially 5*k+1 (k >= 1). The sequence itself appears to have g.f. =
x*(2*x1)*(2*x^2+5*x2)/((1x)^2*(14*x)).


PROG

(C) See Links section.


CROSSREFS

Cf. A340488, A340494.
Sequence in context: A162074 A162052 A082569 * A084908 A078742 A005370
Adjacent sequences: A340492 A340493 A340494 * A340496 A340497 A340498


KEYWORD

nonn,more


AUTHOR

Rémy Sigrist and N. J. A. Sloane, Jan 10 2021


STATUS

approved



