

A322048


Final elements in rows when A322050 is displayed as a triangle.


4



1, 5, 15, 35, 81, 173, 357, 725, 1461, 2933, 5877, 11765, 23541, 47093, 94197, 188405
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OFFSET

1,2


COMMENTS

Needs more terms and a bfile.


LINKS

Table of n, a(n) for n=1..16.


FORMULA

Conjectures: a(n) = 2*a(n1) + 11 for n >= 5; G.f. = x*(6*x^4+2*x^2+2*x+1)/((1x)*(12*x)).
a(n) = A322050(2^n) = A319019(2^n)/8.  M. F. Hasler, Dec 27 2018


CROSSREFS

Cf. A319018, A319019, A322049, A322050.
Sequence in context: A261441 A213580 A221140 * A143695 A019531 A321345
Adjacent sequences: A322045 A322046 A322047 * A322049 A322050 A322051


KEYWORD

nonn,more


AUTHOR

N. J. A. Sloane, Dec 15 2018


EXTENSIONS

a(12)a(16) from Rémy Sigrist, Dec 17 2018
Offset changed from 0 to 1 by M. F. Hasler, Dec 27 2018


STATUS

approved



