

A073217


The terms of A055237 (sums of two powers of 5) divided by 2.


0



1, 3, 5, 13, 15, 25, 63, 65, 75, 125, 313, 315, 325, 375, 625, 1563, 1565, 1575, 1625, 1875, 3125, 7813, 7815, 7825, 7875, 8125, 9375, 15625, 39063, 39065, 39075, 39125, 39375, 40625, 46875, 78125
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..36.


FORMULA

(5^n + 5^m) / 2, n = 0, 1, 2, 3 ..., m = 0, 1, 2, 3, ... n.


EXAMPLE

a(4) = 13 = (5^2+5^0) / 2


CROSSREFS

Cf. A055237.
Sequence in context: A137162 A086769 A018753 * A063484 A057920 A018329
Adjacent sequences: A073214 A073215 A073216 * A073218 A073219 A073220


KEYWORD

easy,nonn


AUTHOR

Jeremy Gardiner, Jul 21 2002


STATUS

approved



