

A193769


Numbers of the form (3^a+5^b)/2 ; a,b >= 0 (with repetition).


3



1, 2, 3, 4, 5, 7, 13, 14, 14, 16, 17, 26, 41, 43, 53, 63, 64, 67, 76, 103, 122, 124, 134, 184, 313, 314, 317, 326, 353, 365, 367, 377, 427, 434, 677, 1094, 1096, 1106, 1156, 1406, 1563, 1564, 1567, 1576, 1603, 1684, 1927, 2656
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OFFSET

1,2


COMMENTS

Elements of the table A193770 (motivated by the less fundamental A081458), sorted by increasing size.
The value 14 = (3^1+5^2)/2 = (3^3+5^0)/2, therefore it occurs twice.


LINKS

Table of n, a(n) for n=1..48.


PROG

(PARI) select( t>t<3000, vecsort(concat(Vec( matrix(9, 6, x, y, (3^(x1)+5^(y1))/2 )))))


CROSSREFS

Cf. A193770 (the table), A081458 (the subtable obtained for even a,b).
Sequence in context: A090703 A137357 A100676 * A226790 A275575 A066661
Adjacent sequences: A193766 A193767 A193768 * A193770 A193771 A193772


KEYWORD

nonn


AUTHOR

M. F. Hasler, Jan 01 2013


STATUS

approved



