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A080526 Final entry in n-th row of triangle in A080524. 2
1, 3, 10, 67, 627, 7781, 117652, 2097159, 43046725, 1000000009, 25937424606, 743008370699, 23298085122487, 793714773254157, 29192926025390632, 1152921504606846991, 48661191875666868489, 2185911559738696531985 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

FORMULA

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

PROG

(PARI) { a(n) = n^(n-1)+(n-1)/(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

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Last modified December 11 17:38 EST 2018. Contains 318049 sequences. (Running on oeis4.)