

A080526


Final entry in nth row of triangle in A080524.


2



1, 3, 10, 67, 627, 7781, 117652, 2097159, 43046725, 1000000009, 25937424606, 743008370699, 23298085122487, 793714773254157, 29192926025390632, 1152921504606846991, 48661191875666868489, 2185911559738696531985
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..18.


FORMULA

For odd n, a(n) = n^(n1) + (n1)/2; for even n, a(n) = n^(n1) + n  1. Alternatively, a(n) = n^(n1) + (n1)/(1 + (n mod 2)).  Max Alekseyev, Oct 23 2008


PROG

(PARI) { a(n) = n^(n1)+(n1)/(n%2 + 1) } \\ Max Alekseyev, Oct 23 2008


CROSSREFS

Cf. A080524, A080525.
Sequence in context: A004102 A072638 A262843 * A232213 A143083 A002499
Adjacent sequences: A080523 A080524 A080525 * A080527 A080528 A080529


KEYWORD

nonn


AUTHOR

Amarnath Murthy, Mar 21 2003


EXTENSIONS

More terms and formula from Max Alekseyev, Oct 23 2008


STATUS

approved



